hierarchical_select 5.x-3.0-rc7

This will be the final RC for HS 3!

Changes since DRUPAL-5--3-0-RC6:

• Fixed #321254: 'Enable level labels' setting in config UI broken
• Implemented #327892: Support the #disabled property
• Fixed #321201: HS Book implementation allows a book page to set itself as parent
• Fixed #329414: HS Menu implementation allows a book page to set itself as parent
• Fixed #316712: HS Menu implementation doesn't allow the restricted parent itself to be picked when the "restrict parent" setting is used
• Fixed #331030: Views integration is too confusing
• Allow specifying a vid in the save-lineage-termpath tokens.
• Fixed #338200: Localization issue: user-defined strings in configs not translated
• Implemented #319794: Book and Menu should have the ability to disable the resizable setting
• Minor refinement for double-clicking the grippie, to make the result nicer in Firefox.
• Fixed #332036: CSS issues in IE7: cancel/create buttons and resize grip
• #316267: Enforce deepest + required without prepopulated defaults
• Added some usage guidelines to the Implementations page.
• Fixed #321180: Regressions in cache system