Bug fixes

Implemented some fixes that I previously added to the 1.1.8.2 branch.

- Removed Revisions/Page Attributes from the profile editing page.
- Altered the CSS to fix the visibility of the tab save button, in the
form and display builders.
- Altered the CSS so that the one-third, two-third, and half options
are based on % widths instead of absolute widths, and made sure they
will show properly in the display builders.