adds initActivity
opens browser to authentication page on sign in click
gets oAuth token from browser and logs the user in.
Adds colors and styles initActivity
fixes bug with two instances after oauth in browser
adds tests for initActivity
Adds animation to login buttons and text
Adds fade out animation to motto text
adds new lines to end of files and adds dimensions to dimens.xml
adds new lines to end of anim files
modifies login page test to not use server
XML changes for lint fix
adds dev login
adds force login and temp login for when login errors occur
Merge pull request #171 from mapzen/peter/osm_login

Peter/osm login