Merge pull request #385 from skpcharles/master

Library&Folders] Show proper error message improvements
included other meta attributes while fetching the concept object
Merge pull request #387 from sheebans/master

included other meta attributes while fetching the concept object
Implemented async clear cache  support  while  doing CUD operation to the object
Merge pull request #388 from sheebans/master

Implemented async clear cache  support  while  doing CUD operation to the object
Changed dynamically computing the rating score logic