created class TagsDialog extending DialogFragment.
navigation drawer refinements
Merge pull request #375 from timrae/navigation-drawer

refinements to the navigation drawer
Bumped version to 2.2alpha85
@branch-specific
Merge pull request #355 from brunodea/issue-1886

fix issue 1886 and created class TagsDialog
Bumped version to 2.2alpha86
@branch-specific
Removed unneeded layout_toRightOf as per https://github.com/ankidroid/Anki-Android/pull/375#issuecomment-45456573
Expose backup restore dialog in the help sub-menu
Correctly close and open collection when replacing with a backup