OR-642 fix invitation storage test
OR-642 Usernotification mongoose schema/model
Merge pull request #440 in OR/rse from ~MBAILLY/rse:OR-642-usernotification-mongoose-schema to master

* commit '12f8848701a1fa426ef38d3df3db1d99e30bfc06':
  OR-642 Usernotification mongoose schema/model
  OR-642 fix invitation storage test