panels 6.x-3.3

Note: You must update CTools to version 1.3 at the same time as updating Panels.

• #612850: Fix crash bug with panes referencing deleted/missing views.
• #614178: Transition to panels-pane.tpl.php caused empty panes to display again.
• #634746 by joshk: Allow pane caching to modify the content during cache storage.
• #612116 by johnskulski: panels-pane preprocess was incorrectly rendering $links
• #612704 by c960657: panels_get_pane_content() inappropriately created a blank context when no contexts were available.
• #618624 by johnskulski: Better classes for panel panes.
• #651306 by joachim: Add "edit any panel node" permission. Not sure why this was never there.
• #497042: Add update.php to remove unused panels_page_router_store table, if it exists.
• #683162: Convert all plugins to use new $plugin = array() format. This is less brittle than the specially named hook.
• #543898: Fix notice error when a layout has no regions.
• #647706: Mini panel names can only be 32 characters, but the form failed to restrict the limit.