Add GDE Directory Client
Add GdeActivity and GdeListFragment
Add GDE to NavDrawer
Add GdeAdapter and UI
ModelCache Bugfix. Allow to serialize/deserialize HashMaps with ArrayList values
Merge branch 'master' into gde
Merge branch 'master' into gde
add event activity with full details
Change in CommonAsyncTask, make params accessible to onPostExecute
Finish up GDE UI
Add About Fragment to GDE section
Add convenience Fragment (for layout content only)
Merge branch 'master' into gde

Conflicts:
	app/src/main/java/org/gdg/frisbee/android/Const.java
	app/src/main/java/org/gdg/frisbee/android/adapter/DrawerAdapter.java
	app/src/main/res/values/strings.xml
move extras to constants and launch events on deep link and notifications
roll back okhttp 2.0 to 1.6
refactor api call for directory
show group logo
use utf-8 as default encoding
upgrade tools
reformat code and use tools namespace for text