Minor Clean-Ups in Multi-Edit

This pull request is based on Wendy's changes submitted in a pull request last working session.  On my own I have done the following:
1. The "Edit Selected Stories" buttons on the all stories index page, now work for any selected set of stories in any of the status lists (partials).
2. The check boxes and Edit Selected buttons have been removed from the edit multiple page.
3. I tried to format the "Edit Selected Stories" button, but was only partially successful on that attempt.