File Reorganization
Added login and register fragment

Still need to figure out account section:
Option A:
We maintain "settings" and "login/logout" underneath navdrawer.

Option B:
Once logged in, we add more navdrawer items. It is questionable whether
or not we can do this.
Added Image Preview to Confessions/Compliments

Ability to preview and remove image before uploading it has been added.
Need to change button style to grey/transparent.