*CORE-1235 Need Api support for Update the Resource url
added constants for ClasspageRestV2Controller
Merge branch 'master' of https://github.com/cyrilraja/Gooru-Core-API
added constants for ConstantProperties
added constants for FeedbackRestV2Controller
added constants for UserManagementRestV2Controller
Merge remote-tracking branch 'gooru/master'
Merge remote-tracking branch 'gooru/master'
Merge remote-tracking branch 'gooru/master'
Merge remote-tracking branch 'gooru/master'

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added constants for CollaboratorServiceImpl
added constants for ConstantProperties
added constants for AssessmentServiceImpl
added constants for CommentServiceImpl
added constants for FeaturedServiceImpl
added constants for ResourceServiceImpl
added constants for SessionServiceImpl
added constants for UserManagementServiceImpl
added constants for ContentServiceImpl
added constants for