Make retrofit callbacks better by simplifiing them so that all errors are handled in the onAllError block.

Change DiffActivity to use a RecyclerView to prevent huge view inflation and out of memory exceptions.

More progress on allowing the user to change a project members access level, as well as changing a group members access level

Change app navigation and structure to where you load projects as needed and initially are presented with a project picker. WIP, but I want to commit since this is going to touch so many areas.

Pass things as parcelable instead of just holding static references. Use progress indicator in a few places instead of a progress dialog. Remove "..." on every string.

Adapters now update via events posted on the event bus, instead of holding static references to adapters

Make AppCompatActivity our base activity so that we can do cool material things. Also, fix error with retrofit that cropped up when upgrading.

This feature adds a checkable menu option to toggle wrapping lines of
code and commit messages to the width of the screen in DiffActivity.

This was achieved by creating a custom HorizontalScrollView with an
onMeasure method that measures its child with an exact MeasureSpec of
its own width. If wrapping is disabled, the super method is called,
making it act just like a normal HorizontalScrollView.

This removes code I left in to print out in LogCat if the application
failed to retrieve the commit data from the server. This does not use
Crouton to show an error message if it failed to connect, because the
diff CallBack already does this, and if it failed to connect to the
server, it would display two error messages.

This commit modifies the API slightly to allow retrieving the git commit
message from a commit, and displays it in DiffActivity. A new View is
created, MessageView, responsible for displaying the text from the
commit message, similar to DiffView. No formatting is done to the text
yet.