Merge branch '410-my-blogs-tab-with-option-to-add-new-blogs' into 'master'

Micro Blogs UI

**Attention:** This MR includes several other commits which are supposed to end up in separate MRs. I suggest that you review **per commit**. Once the first two commits have green light, I can split out the other commits into other MRs. This way I don't have to work myself through a long rebase chain every time I make a change to the bottom MR.

This MR is full of commits that introduce features that we will not be using initially. The last commit implements the Micro Blogs UI on top of the framework the first commits establish and hides/disables all future features for now.

I suggest we merge this as is and clean things up later when we have a clearer idea what features we will be doing eventually.

![device-2016-06-23-135016](/uploads/600fc7c28c0c6c4a60d8273ffb55f30a/device-2016-06-23-135016.png)
![device-2016-06-22-181934](/uploads/e57cfbc162150bcd01d4683d4164406e/device-2016-06-22-181934.png)
![device-2016-06-23-142422](/uploads/5814f1e13b6d2230f2e4c12a8c5cd599/device-2016-06-23-142422.png)
![device-2016-06-23-142506](/uploads/d3ac268082b98bbcd068f3d6fe0c6712/device-2016-06-23-142506.png)
![device-2016-06-22-181913](/uploads/f5dcc1ed9a40ec5fa8f634864903f4cc/device-2016-06-22-181913.png)

Closes #436 

See merge request !214

briar-android/src/org/briarproject/android/util/AndroidUtils.java

@@ -57,6 +57,11 @@ public class AndroidUtils {
 			til.setError(null);
 	}
 
+	public static void setError(TextInputLayout til, int res,
+			boolean condition) {
+		setError(til, til.getContext().getString(res), condition);
+	}
+
 	public static String getBluetoothAddress(Context ctx,
 			BluetoothAdapter adapter) {
 		// Return the adapter's address if it's valid and not fake