Added the remining 3 APIs. Added documentation in classes. Added new
samples.
Activity Service sample for changing entry type. some modifications.
modified sample of changing entry type
SearchEdit Control
Review Comment - added an enum for ActivityNodeTypes. And removed an
extra parameter from wrapper in service class.
Adding blank gif, for image placeholder
Merge pull request #563 from DaviRyan/SearchEditControl

SearchEdit Control
Merge pull request #562 from VimalDhupar/ActivityServiceNewAPIs

Activity service new ap is
Search service java apis