Buttons on each page now stretch to fill the parent's width.
ListView has been added to the Quest Board Activity.
The Main Activity now displays "Log In" instead of "Quest Board" at the
top.
The Main Activity now sends the user's ObjectID from the database to the
Quest Board Activity.
Added custom layout for Quests in the ListView.
Added QuestListAdapter for filling the ListView with Quests.
Added Quest object for holding quest information.