fixed a query gap between 900 and 1000 px on tablet/web
poking around trying to figure out where this makeAThing button bug is coming from
moved the convert-to-tablet-layout functions to the view object
Think I fixed bug.  added code to makeThingButtonHandler to add a click event to the new thing's back button.  also added code to addGridSquare that will add mobileSelectButtonHandler to all .thing elements.  not sure if it's the best solution but it seems to work