Revert "ILS Tablet/Mobile Enhancements & minor fixes:"

@alextrichos The code present a few bugs:
[ ] the tool bar appears open by default
[ ] the length of the page is affected if there are tools at the the ILS level (in the tool bar)
[ ] a few class styles from app.css are not accessible (e.g., resource related ones). Or we include the app.css once more or, we include the missing styles in custom.css