Collapse search before showing results full list.
Pops back stack when home as up is pressed.
Enables/disables home as up and sets action bar title.
Hides search icon when results are shown.
Expands search view and sets current search term when full results are hidden.
Removes pager results fragment when search view is collapsed.

Breaks dependency between AutoCompleteAdapter and PagerResultsFragment.
Merge pull request #24 from mapzen/view-all-action-bar

View all action bar