Updates for Android 5.0

Migrated Action Bar's to Toolbars (for better or worse)
Updated tooling to new 1.0 Andriod Studio requirements

Still broken: 'add entry' dialog is not displaying properly, for some reason

Change-Id: Ia0694f0c625f4397c76a25158d9471f5a2fdac54
Fixed a few issues with Android 5.0 updates

1. Fixed import progress dialog bug:
   If orientation changed during the import operation, future orientation changes
   would trigger the dialog to be recreated, without a way to close it... I
   suspect this is a bug in Android or the support libraries, but I put a fix in
   place to avoid the issue.
2. Fixed action bar (toolbar) padding issue in 'add entry' dialog
3. Fixed crash during orientation change 'add entry' dialog. I suspect this is a bug
   in Android or the support libraries, but the fix will avoid the bug.

Added a file that was missed in the previous checkin (MainActionBar.java)

Change-Id: Id5aaec24cb5d843aab116d485793731d760c9382