Fix broken link in welcomeEmail
Merge branch 'r4.9.1'
Adding ref: [] requests to getUsers in redis.
GetUsers/getRooms with ref: [] or "" is served by leveldb.
Merge pull request #249 from scrollback/testing

Testing
GetRooms query with multiple ids handled by redis.
CreateRoom fix and no result fix in leveldb.
Merge branch 'master' into multi-get
Removing some testing code.
Merge pull request #251 from scrollback/multi-get

Multi get
Merge branch 'master' into testing

Conflicts:
	leveldb-storage/leveldb-test.js
added redis-storage test