Downgraded unathorised log to warning

services/real-time/app/coffee/WebsocketController.coffee

@@ -22,7 +22,7 @@ module.exports = WebsocketController =
 
 			if !privilegeLevel or privilegeLevel == ""
 				err = new Error("not authorized")
-				logger.error {err, project_id, user_id, client_id: client.id}, "user is not authorized to join project"
+				logger.warn {err, project_id, user_id, client_id: client.id}, "user is not authorized to join project"
 				return callback(err)
 				
 			client.join project_id

services/real-time/test/unit/coffee/WebsocketControllerTests.coffee

@@ -116,7 +116,10 @@ describe 'WebsocketController', ->
 				@callback
 					.calledWith(new Error("not authorized"))
 					.should.equal true
-	
+
+			it "should not log an error", ->
+				@logger.error.called.should.equal false
+
 	describe "leaveProject", ->
 		beforeEach ->
 			@DocumentUpdaterManager.flushProjectToMongoAndDelete = sinon.stub().callsArg(1)