Make Status refreshable

[relrod]

This will basically look like this:

• Add a refresh button to the action bar.
• Move the future block of StatusActivity to its own (private) method.
  • Make sure it can be called multiple times and do the right thing each time. In theory, it should, because it sets the Adapter each time, and the Adapter is generated on the fly.
• Call it in onCreate.
• Hook it up to the refresh button.