Releases for Plain Grail

Release notes

* Fixed link hover problem on layout.css
* Added Grid 24 + Grid 16 columns background with jquery toggle
* using zen_id_safe for additional semi unique menu_item classes
* sprites added for search and grid toggler
* Remove separator.png
* Separate ads support as optional in ads.css, disabled by default
* Added README, LICENSE and CHANGELOG files
* Correct cropped tables on administration, and set it to visible overflow
* Fine-grained organization of CSS selectors, clear separation of layout and decorations
* Split the holy grail technique into separate body classes for extensibility
- and easier maintenance
* Added 3 additional holy grail alternative column widths apart from defaults:
- grail-140x300 || grail-160x220 || grail-170x170
* Add Theme-specific settings to plaingrail administrations (admin/build/themes/settings/plaingrail):
- Optional width alternatives during theme development
- Optional borders and sidebar-left background color
- Optional Ad Unit Guidelines and Universal Ad Package
- Optional grail-overrides.css activation for safe upgrades
- Optional grail-devwith.css activation for dev purposes

* Make holy grail-devwidth.css deletable once custom ready grail-overrides.css set up