Another big bunch of Settings stuff done.

Getting closer to finishing #5!
 - Closed #13, "refresh now" in settings
 - Found the likely cause of at least one form of #8: the temperature is shown, the main text still complains about the lack of weather data (there was an x == y && x == z, shoulda've been an || instead)
 - Added proper handling of stuff with the settings activity, and added a DashClock-like DONE button to the ActionBar
 - Finished polishing the Authors dialog
 - A few things here and there