Bug fixes

Major overhaul of the adsense module:

• Has a new hook_adsense that can be used by other modules to determine which Google Adsense ID to show. This opens new doors for revenue sharing. Watch for the blog post.
• No longer depends on the profile module for sites that don't need revenue sharing.
• Uninstall for all the included modules.
• Help is now easier to maintain in separate files with plain HTML in here docs.

Documentation update & use fopen & fwrite instead of file_put_contents.

Roll up changes

Improvements
- Code cleanup.
- #215801: change the module's package to "Panels style plugins", like in the panels_tabs module.

Bug fixes
- Fixed: PHP warning when using with Panels 2 beta 2.

Fixed an absolute path bug found by narres in http://drupal.org/node/219641. Added checks to ensure that secondary functions are not called when module has not been enabled.

I've been adding new features in almost every beta/RC. Not anymore now.

There's one known issue in this release. The reason it's not fixed yet: I've not yet been able to reproduce it.

New features:
- JS-enhanced Hierarchical Select settings form on the Vocabulary settings form
- New: Level label support when enforce_deepest is enabled; level labels will only be allowed in the root level.
- Smarter default settings for #required and #multiple for the exposed filter overriding.
- New: ability to set a root level label when enforce_deepest is enabled.

Improvements:
- Improvement: more consistent use of the "" option, available when: optional, or enforce_deepest is enabled, or multiple select is active and at least one item is selected.
- Improvement: the "" option is now automatically selected as soon as at least one item has been added to the dropbox (even if it's a required form item) – this required changes in the client-server interaction.
- Improvement: more reliable lineage reconstruction algorithm when save_lineage is enabled.
- Improvement: all_option setting now only has effect when multiple select is enabled (minor).
- Improved: Made selection of value 'label_X' trigger similar events as 'all' value: no server query required!