Fix TabIndicator animation.
Merge branch 'master' of github.com:keithellis/MaterialWidget

# By Dave
# Via Dave (1) and StrayCat (1)
* 'master' of github.com:keithellis/MaterialWidget:
  Update PaperButton.java
  Support for ActionMode
  Bugfix: check if pager is not null
  Add auto-resize TabBar on OrientationChange
Implement CircularProgress.