menus, new add topic activity, help pages, redirect to url on topic feed
Merge branch 'refs/heads/master' into Menus

Conflicts:
	gcm-client/src/com/google/android/gcm/demo/app/DemoActivity.java
	gcm-client/src/com/google/android/gcm/demo/app/TopicFeedActivity.java
build fixes
Code refactoring
internet connection test
populat topics from server
Merge branch 'refs/heads/master' into Refactoring&PopularTopics

Conflicts:
	gcm-client/res/layout/main.xml
	gcm-client/src/com/google/android/gcm/demo/app/GcmBroadcastReceiver.java
	gcm-client/src/com/google/android/gcm/demo/app/TopicFeedActivity.java
build fixes
Merge branch 'refs/heads/Refactoring&PopularTopics'