Save alignment and name at registration
Changed SettingsActivity to use Parse

Also moved static Strings usable for Parse into QuestApp. They are used
in a number of activities, and keeping them in one class will make it
simpler to keep track of them.
Implemented ParseQueryAdapter for listing quests
Changed QuestDetailActivity to use Parse

And related changes to QuestListActivity, removing non-Parse methods
which were no longer needed.
Bugfix: correcting for blank latitude&longitude
Implemented quest filtering
Removed old unused quest classes

Removed QuestData and QuestDataArrayAdapter, and the string-arrays that
fed them.
Added accepting & completing of quests
Implemented getting location automatically