Merge pull request #1 from jinoleynik/master

Stop AsyncTaskMultiplexor method
Base activity for demo project
Message date fromatter
ChangeLog updated
WiFi networks loader sample
Fixed AbstractCommunicationChat - listener should be transient
New AbstractNewMessageReceiver that allows to show notifications when new message arrived
New simple error dialog class
-AbstractServiceTaskHandler now use LocalBradcastManager
Merge pull request #3 from vshcryabets/master

pull