Fix FB profile to also be 200dp.

When we made MapSnippet 200dp, this photo size also had to be updated.
Merge pull request #180 from rogerhu/fb_profile_phoot

Fix FB profile to also be 200dp.
First pass at navigation bar for RequestCreateActivity.
Add drawables icon for drawers.
Add navigation drawer XML.
Expose logout for Facebook inside User class.
Handle click events on drawers for RequestCreateActivity.
Update RequestCreateActivity and RequestMapActivity to derive from AbstractNavDrawerActivity.
Expose showDrawer()/hideDrawer() to centralize showing/hiding of navigation drawer.

When the user clicks on an icon on RequestMapActivity, we want to hide the navigation drawer.
Moving this code makes it easier to manage this part.