Implemented callback between BugpickerFragment and MainActivity
setTitle - changes the actionbar title
Added setTitle to BugpickerListener and EditorListener interfaces.
Implemented setTitle in MainActivity - Prefer this over previous solution (see placeholderfragment onSectionAttached)

Removed buttons "Settings" and "Example action"
Cleaned up imports.
Removed unused actionbar items
Merge remote-tracking branch 'origin/master'