Use constructor injection for controllers.

...-android/src/org/briarproject/android/ActivityModule.java

...rc/org/briarproject/android/blogs/BaseControllerImpl.java

...rc/org/briarproject/android/blogs/BlogControllerImpl.java

...rc/org/briarproject/android/blogs/FeedControllerImpl.java

...org/briarproject/android/controller/ConfigController.java

...briarproject/android/controller/ConfigControllerImpl.java

...org/briarproject/android/controller/DbControllerImpl.java

...arproject/android/controller/NavDrawerControllerImpl.java

...iarproject/android/controller/PasswordControllerImpl.java

.../briarproject/android/controller/SetupControllerImpl.java

...c/org/briarproject/android/forum/ForumControllerImpl.java

...ava/org/briarproject/android/forum/TestForumActivity.java