UnifiedPushClient - simplify pushServerURL passed in - AGJS-158
Modify unit tests to comply with AGJS-158
Gruntfile - fix push concat task build src
Gruntfile - data-manager task should be dataManager
Gruntfile - datamanager should have its own specific builds
DataManager - fix examples to use correct syntax - AGJS-172
SimplePush - callback param is never used. AGJS-164