panels 5.x-2.0-alpha12

Changes since DRUPAL-5--2-0-ALPHA11:

• Major fixes to the panel exporter
• Ensure layout settings are always visible for mini panels and panel nodes
• Relationships plus some subset of the taxonomy content stuff.
• #172877: Fix incorrect sequence id for panels_display table
• Fix cosmetic warning on panels_mini content edit page
• #181738: Fix for layout selection form on Safari.
• #181014: node add/edit forms were only using the default display
• #180804: Allow views.inc to include an offset
• #180653: panel settings would get cleared when "settings" tab was saved.
• Fix unclosed tag in flexible layout
• Removing 'panels implementations' from styles'
• Fix visibility of panel styles (broken by recent commit)
• Overhaul of "required context" in preparation for allowing multiple contexts
• Support for multiple contexts
• Fix generic titles for node_form widgets
• Fixes for default panels; better control on the panel pages list screen
• Commenting out erroneous console.log statement
• Fix wrong title when argument not specified; fix 404 when argument asks for 404; fix too much CSS on rounded_corner style; fix missing div on rounded corner style when no id on panel
• Fix for argument add button sometimes giving "unknown response from server"
• Major rework of context; fully implemented multiple context, context conversion to arguments and now Views can accept contexts. This is a major step toward turning context into a Fully Operational Battle Station.
• Titles overhaul; %keywords now work in all titles and all content gets the override title automatically unless it asks not to have it.
• spiffy new tabs stuff!
• set panels weight to 10; fix problem with js buttons if using tables in theme
• Fix for edit argument $_POST odd behavior.