Clean up caching of displays in page manager. Still need to do mini panels and panel nodes, I suppose.

Update CSS caching on panel page and panel context to use ctools_css_store instead of remembering the filename.

#375686: Create panels_get_current_page_display() to replace the old panels_get_current_page() function.

Added allowed layouts to settings form for panel pages, nodes, minis.

New simpler panel page task that doesn't bother with handlers at all. The UI still needs some cleanup. This requires a cvs up of CTools.

Store a panel task handler's display in the database rather than as part of the handler, allowing flexible to cache the CSS using the display ID.

Introducing the new version of flexible which is both more powerful and comes with a javascripty visual layout designer. It is not yet flawless but it finally works well enough to commit. This commit REQUIRES the twin commit of ctools that is going in.

Implement titles; this caused a retooling of the return value of the context task handler rendering so be sure to sync up.

Minor updates to stay up with ctools; remove deprecated panel_node_viwe task handler, as it will now always be panel_context

Some major restructuring, catching up to CTools. This is very much in process, there is a huge list of things that need to happen here still, but this may be checkpoint usable to the strong-stomached.

More tweaks to panel delegator stuff, including moving more work from the plugin to delegator.inc and displaying information about the panel display in a delegator dropdown.