Android UI for group messages (anonymous text only, no moderation yet).

briar-android/AndroidManifest.xml

briar-android/res/drawable-hdpi/social_new_chat.png

briar-android/res/drawable-hdpi/social_reply_all.png

briar-android/res/drawable-mdpi/social_new_chat.png

briar-android/res/drawable-mdpi/social_reply_all.png

briar-android/res/drawable-xhdpi/social_new_chat.png

briar-android/res/drawable-xhdpi/social_reply_all.png

briar-android/res/values/color.xml

briar-android/res/values/strings.xml

...-android/src/net/sf/briar/android/HomeScreenActivity.java

...d/src/net/sf/briar/android/contact/ContactComparator.java

.../src/net/sf/briar/android/contact/ContactListAdapter.java

...oid/src/net/sf/briar/android/contact/ContactListItem.java

...ndroid/src/net/sf/briar/android/groups/GroupActivity.java

...android/src/net/sf/briar/android/groups/GroupAdapter.java

...id/src/net/sf/briar/android/groups/GroupListActivity.java

...oid/src/net/sf/briar/android/groups/GroupListAdapter.java

...ndroid/src/net/sf/briar/android/groups/GroupListItem.java

.../net/sf/briar/android/groups/GroupNameSpinnerAdapter.java

...net/sf/briar/android/groups/ReadGroupMessageActivity.java