Merge remote-tracking branch 'gooru/master'
Merge remote-tracking branch 'gooru/master'
Merge pull request #511 from cyrilraja/master

*Implemented CORE-1529 Include SignOut event for v2 Gooru API
Added fix for standards preference issue
Merge pull request #512 from parthibane/master

Added fix for standards preference issue
Fixed root node fetch issue
Merge pull request #513 from sheebans/master

Fixed root node fetch issue
Merge remote-tracking branch 'gooru/master'
Changed exception codings in message properties