Search Pagination, Increased Cache Max-Age, and More

- Now hides actionbar items upon drawer open
- OnClick listeners for header
- Don't load Feed action items if search is active
- Fixed action_website action
- Shortened FeedFragment newInstance() method
- Works better with search
- New .get() method for search query support
- Renamed singleton to... "singleton"
- Increased cache max age to 1 hour
- Proper search pagination