Make New Show link a button.
Make new show and new scene links buttons instead.

* Hide the currently unused 'copy' buttons on shows and show pages.
preview: wip
ReadMe: Add minimum reqs for windows being Win 64.
preview: Attempt at have javascript create previews dynamically.

* Doesn't seem to work. Maybe plugins need to be delivered to the browser with the page.
preview: 2 previews without ng-repeat
Add ChangeLog