Bring nullable annotation imports in line

Signed-off-by: goapunk <noobie@goapunks.net>

briar-android/src/main/java/org/briarproject/briar/android/ScreenFilterMonitorImpl.java

@@ -10,7 +10,6 @@ import android.content.pm.PackageInfo;
 import android.content.pm.PackageManager;
 import android.content.pm.PackageManager.NameNotFoundException;
 import android.content.pm.Signature;
-import android.support.annotation.Nullable;
 import android.support.annotation.UiThread;
 import android.support.v7.preference.PreferenceManager;
 
@@ -38,6 +37,7 @@ import java.util.concurrent.Future;
 import java.util.concurrent.atomic.AtomicBoolean;
 import java.util.logging.Logger;
 
+import javax.annotation.Nullable;
 import javax.inject.Inject;
 
 import static android.Manifest.permission.SYSTEM_ALERT_WINDOW;

briar-android/src/main/java/org/briarproject/briar/android/activity/BriarActivity.java

@@ -3,7 +3,6 @@ package org.briarproject.briar.android.activity;
 import android.annotation.SuppressLint;
 import android.content.Intent;
 import android.os.Build;
-import android.support.annotation.Nullable;
 import android.support.v7.app.ActionBar;
 import android.support.v7.widget.Toolbar;
 import android.transition.Slide;
@@ -21,6 +20,7 @@ import org.briarproject.briar.android.panic.ExitActivity;
 
 import java.util.logging.Logger;
 
+import javax.annotation.Nullable;
 import javax.inject.Inject;
 
 import static android.content.Intent.FLAG_ACTIVITY_CLEAR_TASK;

briar-android/src/main/java/org/briarproject/briar/android/blog/BlogActivity.java

@@ -2,7 +2,6 @@ package org.briarproject.briar.android.blog;
 
 import android.content.Intent;
 import android.os.Bundle;
-import android.support.annotation.Nullable;
 import android.support.v7.widget.Toolbar;
 import android.view.View;
 
@@ -15,6 +14,7 @@ import org.briarproject.briar.android.activity.BriarActivity;
 import org.briarproject.briar.android.fragment.BaseFragment.BaseFragmentListener;
 import org.briarproject.briar.android.sharing.BlogSharingStatusActivity;
 
+import javax.annotation.Nullable;
 import javax.inject.Inject;
 
 @MethodsNotNullByDefault

briar-android/src/main/java/org/briarproject/briar/android/contact/ContactItemViewHolder.java

@@ -1,6 +1,5 @@
 package org.briarproject.briar.android.contact;
 
-import android.support.annotation.Nullable;
 import android.support.annotation.UiThread;
 import android.support.v7.widget.RecyclerView;
 import android.view.View;
@@ -13,6 +12,8 @@ import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import org.briarproject.briar.R;
 import org.briarproject.briar.android.contact.BaseContactListAdapter.OnContactClickListener;
 
+import javax.annotation.Nullable;
+
 import im.delight.android.identicons.IdenticonDrawable;
 
 @UiThread

briar-android/src/main/java/org/briarproject/briar/android/controller/SharingControllerImpl.java

@@ -1,7 +1,5 @@
 package org.briarproject.briar.android.controller;
 
-import android.support.annotation.Nullable;
-
 import org.briarproject.bramble.api.contact.ContactId;
 import org.briarproject.bramble.api.event.Event;
 import org.briarproject.bramble.api.event.EventBus;
@@ -15,6 +13,7 @@ import java.util.Collection;
 import java.util.HashSet;
 import java.util.Set;
 
+import javax.annotation.Nullable;
 import javax.inject.Inject;
 
 @NotNullByDefault

briar-android/src/main/java/org/briarproject/briar/android/fragment/SFDialogFragment.java

@@ -3,7 +3,6 @@ package org.briarproject.briar.android.fragment;
 import android.app.Dialog;
 import android.content.DialogInterface;
 import android.os.Bundle;
-import android.support.annotation.Nullable;
 import android.support.v4.app.DialogFragment;
 import android.support.v7.app.AlertDialog;
 import android.text.TextUtils;
@@ -19,6 +18,8 @@ import org.briarproject.briar.android.activity.BaseActivity;
 
 import java.util.ArrayList;
 
+import javax.annotation.Nullable;
+
 @MethodsNotNullByDefault
 @ParametersNotNullByDefault
 public class SFDialogFragment extends DialogFragment {

briar-android/src/main/java/org/briarproject/briar/android/fragment/SignOutFragment.java

@@ -1,7 +1,6 @@
 package org.briarproject.briar.android.fragment;
 
 import android.os.Bundle;
-import android.support.annotation.Nullable;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
@@ -9,6 +8,8 @@ import android.view.ViewGroup;
 import org.briarproject.briar.R;
 import org.briarproject.briar.android.activity.ActivityComponent;
 
+import javax.annotation.Nullable;
+
 public class SignOutFragment extends BaseFragment {
 
 	private static final String TAG = SignOutFragment.class.getName();

briar-android/src/main/java/org/briarproject/briar/android/privategroup/conversation/GroupMessageItem.java

@@ -1,7 +1,6 @@
 package org.briarproject.briar.android.privategroup.conversation;
 
 import android.support.annotation.LayoutRes;
-import android.support.annotation.Nullable;
 import android.support.annotation.UiThread;
 
 import org.briarproject.bramble.api.identity.Author;
@@ -12,6 +11,7 @@ import org.briarproject.briar.R;
 import org.briarproject.briar.android.threaded.ThreadItem;
 import org.briarproject.briar.api.privategroup.GroupMessageHeader;
 
+import javax.annotation.Nullable;
 import javax.annotation.concurrent.NotThreadSafe;
 
 @UiThread

briar-android/src/main/java/org/briarproject/briar/android/privategroup/creation/CreateGroupActivity.java

@@ -2,7 +2,6 @@ package org.briarproject.briar.android.privategroup.creation;
 
 import android.content.Intent;
 import android.os.Bundle;
-import android.support.annotation.Nullable;
 
 import org.briarproject.bramble.api.db.DbException;
 import org.briarproject.bramble.api.nullsafety.MethodsNotNullByDefault;
@@ -14,6 +13,8 @@ import org.briarproject.briar.android.controller.handler.UiResultExceptionHandle
 import org.briarproject.briar.android.privategroup.conversation.GroupActivity;
 import org.briarproject.briar.android.sharing.BaseMessageFragment.MessageFragmentListener;
 
+import javax.annotation.Nullable;
+
 @MethodsNotNullByDefault
 @ParametersNotNullByDefault
 public class CreateGroupActivity extends BaseGroupInviteActivity implements

briar-android/src/main/java/org/briarproject/briar/android/privategroup/memberlist/MemberListItem.java

@@ -1,7 +1,5 @@
 package org.briarproject.briar.android.privategroup.memberlist;
 
-import android.support.annotation.Nullable;
-
 import org.briarproject.bramble.api.contact.ContactId;
 import org.briarproject.bramble.api.identity.Author;
 import org.briarproject.bramble.api.identity.Author.Status;
@@ -9,6 +7,7 @@ import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import org.briarproject.briar.api.privategroup.GroupMember;
 import org.briarproject.briar.api.privategroup.Visibility;
 
+import javax.annotation.Nullable;
 import javax.annotation.concurrent.NotThreadSafe;
 
 @NotThreadSafe

briar-android/src/main/java/org/briarproject/briar/android/sharing/SharingStatusActivity.java

@@ -2,7 +2,6 @@ package org.briarproject.briar.android.sharing;
 
 import android.content.Intent;
 import android.os.Bundle;
-import android.support.annotation.Nullable;
 import android.support.annotation.StringRes;
 import android.support.v7.widget.LinearLayoutManager;
 import android.view.MenuItem;
@@ -25,6 +24,7 @@ import java.util.Collection;
 import java.util.List;
 import java.util.logging.Logger;
 
+import javax.annotation.Nullable;
 import javax.inject.Inject;
 
 import static java.util.logging.Level.WARNING;

briar-android/src/main/java/org/briarproject/briar/android/threaded/ThreadItemAdapter.java

@@ -1,7 +1,6 @@
 package org.briarproject.briar.android.threaded;
 
 import android.os.Handler;
-import android.support.annotation.Nullable;
 import android.support.annotation.UiThread;
 import android.support.v7.widget.LinearLayoutManager;
 import android.support.v7.widget.RecyclerView;
@@ -15,6 +14,8 @@ import org.briarproject.briar.android.util.VersionedAdapter;
 
 import java.util.Collection;
 
+import javax.annotation.Nullable;
+
 import static android.support.v7.widget.RecyclerView.NO_POSITION;
 
 @UiThread

briar-android/src/main/java/org/briarproject/briar/android/threaded/ThreadListActivity.java

@@ -3,7 +3,6 @@ package org.briarproject.briar.android.threaded;
 import android.content.Intent;
 import android.os.Bundle;
 import android.support.annotation.CallSuper;
-import android.support.annotation.Nullable;
 import android.support.annotation.StringRes;
 import android.support.annotation.UiThread;
 import android.support.design.widget.Snackbar;
@@ -39,6 +38,7 @@ import org.thoughtcrime.securesms.components.KeyboardAwareLinearLayout;
 import java.util.Collection;
 import java.util.logging.Logger;
 
+import javax.annotation.Nullable;
 import javax.inject.Inject;
 
 import static android.support.design.widget.Snackbar.make;

briar-android/src/main/java/org/briarproject/briar/android/util/UiUtils.java

@@ -1,7 +1,6 @@
 package org.briarproject.briar.android.util;
 
 import android.content.Context;
-import android.support.annotation.Nullable;
 import android.support.design.widget.TextInputLayout;
 import android.support.v4.app.FragmentManager;
 import android.support.v4.content.ContextCompat;
@@ -23,6 +22,8 @@ import org.briarproject.briar.R;
 import org.briarproject.briar.android.view.ArticleMovementMethod;
 import org.briarproject.briar.android.widget.LinkDialogFragment;
 
+import javax.annotation.Nullable;
+
 import static android.text.format.DateUtils.DAY_IN_MILLIS;
 import static android.text.format.DateUtils.FORMAT_ABBREV_MONTH;
 import static android.text.format.DateUtils.FORMAT_ABBREV_RELATIVE;

briar-android/src/main/java/org/briarproject/briar/android/view/UnreadMessageButton.java

@@ -2,7 +2,6 @@ package org.briarproject.briar.android.view;
 
 import android.content.Context;
 import android.content.res.TypedArray;
-import android.support.annotation.Nullable;
 import android.support.annotation.UiThread;
 import android.support.design.widget.FloatingActionButton;
 import android.util.AttributeSet;
@@ -13,6 +12,8 @@ import android.widget.TextView;
 import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import org.briarproject.briar.R;
 
+import javax.annotation.Nullable;
+
 @UiThread
 @NotNullByDefault
 public class UnreadMessageButton extends FrameLayout {