Issue 2707 and 3904 - Added help files to Preferences page
2707 and 3094 - Added help files to Preference sections
Revert "Issue 2707 and 3904 - Added help files to Preferences page"

This reverts commit 126b4d1a40a164e52b47f98f48dfc2d779c82ba8.
added target: blank
3282: Corrent content type for epub download
Change the mime type of mobi files generated by Ruby
3378 inbox filter options misaligned
Remove extra closing li tag
Issue 3248, on posting forms Rich text and HTML are now two separate buttons with the selected one visibly pressed
Fix exposed HTML on new collection form
Mm, translation strings
Issue 3453: Text changes to ToS and FAQ ToS
Removing a space. Fixing indenting
Removing questionmark symbol
change css cleaner and site style to prevent work skin styling breaking out of work container
add caller_check option to css_cleaner clean method to allow work skin to exclude position:fixed; change selector prefixing regex to prevent styling of the parent element via sneaky selectors
3464 let admins see restricted works
Removed empty <li> and obsolete help file
Updated from upstream master
Removed unwanted document...