Merge pull request #523 from cyrilraja/master

changed exceptions and added constants for ScollectionServiceImp
Added read only session support
Merge pull request #527 from sheebans/master

Added read only session support
Added read only session  for some of the  taxonomy related fetch queries
Merge pull request #528 from sheebans/master

Added read only session  for some of the  taxonomy related fetch queries
changed the content meta data association logic
Merge pull request #529 from skpcharles/master

changed the content meta data association logic
added fix Parallel [My Classes - Assign folder] only can assign 10 collection from a folder
Merge remote-tracking branch 'gooru/master'
Changed the db name for association type in content meta association
Merge pull request #530 from skpcharles/master

added fix Parallel [My Classes - Assign folder] only can assign 10 colle...
*more changes DO-5163
Merge remote-tracking branch 'gooru/master'

Conflicts:
	api/src/main/java/org/ednovo/gooru/domain/service/FeedbackServiceImpl.java