New features

Backport to Drupal 6.x

Changes since DRUPAL-6--2-0-ALPHA3:

• By kiam: Added the function Vars::api() and changed the arguments of Vars::getLibraryPath().
• By kiam: Added the default value for the persistant variables admin_theme and book_allowed_types.
• By kiam: Changed the arguments and the code of Vars::getLibraryPath().
• By kiam: Added the method Vars::siteIsOffline().

Changes since DRUPAL-7--2-0-ALPHA1:

• by aaron: Allow WYSIWYG to override styles.
• by aaron: Add labels to file styles.
• by aaron: Add vertical tabs for containers in Styles UI.
• by aaron: Add preview to container in UI.

Changes since DRUPAL-7--1-0-ALPHA1:

• by aaron: Respect WYSIWYG overrides on w/h.
• by aaron: Add label to file style.
• by aaron: Add file styles ui preview theme.
• by aaron: Preview theme.
• by aaron: Add file styles ui preview theme.

Changes since DRUPAL-7--2-0-ALPHA3:

#931568: A few features to work on for D7 by Jose Reyero:

1. Auto schedule jobs
2. Re-schedule jobs
3. More ellaborated schedules (day, hour, minute)