set user email on session again on change email

services/web/app/coffee/Features/User/UserController.coffee

@@ -72,6 +72,7 @@ module.exports = UserController =
 							if err?
 								logger.err err:err, user_id:user_id, "error getting user for email update"
 								return res.send 500
+							req.session.user.email = user.email
 							UserHandler.populateGroupLicenceInvite user, (err)-> #need to refresh this in the background
 								if err?
 									logger.err err:err, "error populateGroupLicenceInvite"
@@ -127,6 +128,5 @@ module.exports = UserController =
 					  type:'error'
 					  text:'Your old password is wrong'
 
-	changeEmailAddress: (req, res)->
 
 

services/web/test/UnitTests/coffee/User/UserControllerTests.coffee

@@ -57,7 +57,9 @@ describe "UserController", ->
 			"../Subscription/SubscriptionDomainHandler":@SubscriptionDomainHandler
 			"./UserHandler":@UserHandler
 			"settings-sharelatex": @settings
-			"logger-sharelatex": {log:->}
+			"logger-sharelatex": 
+				log:->
+				err:->
 			"../../infrastructure/Metrics": inc:->
 
 		@req = 
@@ -65,6 +67,7 @@ describe "UserController", ->
 				destroy:->
 				user :
 					_id : @user_id
+					email:"old@something.com"
 			body:{}
 		@res =
 			send: sinon.stub()
@@ -154,6 +157,20 @@ describe "UserController", ->
 				done()
 			@UserController.updateUserSettings @req, @res
 
+		it "should update the email on the session", (done)->
+			@req.body.email = @newEmail.toUpperCase()
+			@UserUpdater.changeEmailAddress.callsArgWith(2)
+			callcount = 0
+			@User.findById = (id, cb)=>
+				if ++callcount == 2
+					@user.email = @newEmail
+				cb(null, @user)
+			@res.sendStatus = (code)=>
+				code.should.equal 200
+				@req.session.user.email.should.equal @newEmail
+				done()
+			@UserController.updateUserSettings @req, @res
+
 		it "should call populateGroupLicenceInvite", (done)->
 			@req.body.email = @newEmail.toUpperCase()
 			@UserUpdater.changeEmailAddress.callsArgWith(2)