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
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
Merge pull request #146 from gdg-x/gde

Add GDE Section