panels 6.x-3.0-beta2

This release requires CTools API v1.0.1 which can be found in ctools 6.x-1.0-beta3

• Update to require CTools based upon its advertised API version number.
• Update code to ensure that the dead 'panels simple cache' module is really dead.
• Attempt to go back further in history for a Panels 1 upgrade path.
• Fix for making sure Panels completely disables itself if using incompatible version of CTools.
• Update CSS caching on panel page and panel context to use ctools_css_store instead of remembering the filename.
• Infinite loop protection in panel nodes.
• #459078: Provide the "read more" flag for teasers of panel nodes.
• Fix broken styling when dragging a panel pane.
• Integrate with CTools tab system so we can add edit tabs to all our panel pages.
• #454208: pgsql does not support concat(), so use || instead for postgres.
• #445828: Remove "Settings" link if a content type has no settings form.
• #460200: Allow regions and columns that have only 'fixed' width items. Disallow changing a 'fixed' item to 'fluid.'