added a cache to the IdentityManager, changed its signature, modified when and where the author is stored

made the author creation single-threaded again in the LifecycleManager, removed redundant code

briar-android/src/org/briarproject/android/controller/SetupController.java

@@ -6,6 +6,7 @@ public interface SetupController {
 
 	float estimatePasswordStrength(String password);
 
-	void createIdentity(String nickname, String password,
-			ResultHandler<Long> resultHandler);
+	void storeAuthorInfo(String password, String nickName,
+			ResultHandler<Void> resultHandler);
+
 }