These filters change the implemntation of sub and gsub to use the block method.
This prevents the evaluation of backreferences in the replacement text. See
https://gist.github.com/1491437 for examples.

Also, it allows split to be called without arguments to split strings on
whitespace.

The floated tags (>toc and <toc) are invalid syntax because of the < and >
characters. We transform them to toc_left and toc_right instead.

This is required to retaiun the definition in development mode as the module
is stragely reloaded.

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@8234 e93f8b46-1217-0410-a6f0-8f06a7374b81

[#733] Add Issue#due_today? and add due-today css class

Contributed by Peer Allan

[#761] Fix quotation of since date in git adapter

It was conflicting with S&P theme styles due to the CSS load order,
reset them back to the pre-S&P theme style.

* Remove bunch of extra code from choosen
* Fix awkward indention
* Add admin menu items to the Modules menu
* Turn off bold on menu item hover, was causing jumping in width
* Fix color on opened top menus
* Fix a bunch of edge cases in the menu clicks.
* Remove gross 'html' binding in favor of a one time only one

- background gradient image missing
- made icon grey in order to keep it visible
- raised icon margin to position it directly inside the
  widget when in personalize mode
- added a background image to display the gradient

2 columns instead of 3 for issue detail