tix4u- Add tmp btn for segue to sales map VC

We have a storyboard layout which has a scene with the ‘MapVC’ class
(that contains a map in to half and a TVC in bottom half). We’re
placing all other elements visually on the SellVC, including the ‘next’
button which we want the user to press when he wants to proceed and see
the MapVC. Seems like you can’t change the frame of a button
programmatically if you are using ‘AutoLayout’ from storyboards so I’ve
added a fake (invisible) button on the scene which allows us to have a
named segue to push to the MapVC.
tix4u- No functional changes, just whitespace etc