Merge pull request #543 from skpcharles/master

fixed null pointer issue in assign collection to a class API
Implemented Changes Party Entity
Merge pull request #544 from saravanab/master

Implemented Changes Party Entity
added fix for null pointer expection
Merge remote-tracking branch 'gooru/master'
added fix for null pointer expection
added fix for null pointer expection
Code improvements related core 1485
Merge pull request #545 from sheebans/master

added fix for null pointer exception while fetching the workspace
Merge pull request #546 from vksvenkat/master

Code improvements related core 1485
Fixed DO-5388 6.5 [Search] Updated username is not reflecting in search created by field
Merge pull request #547 from cyrilraja/master

Fixed DO-5388 6.5 [Search] Updated username is not reflecting in search ...
fixed [My Collections - Question Copy] MC, MA, TF, FIB only shows one answer issue