Various

- Removed 'searchpage' and 'page' from list of available postwizard to
choose from when creating a new  post
- Color picker vg_3_4 now also impact colors of datepicker
- New action to hook between rendering head and content
- Implemented generic cursor autofit to parent feature (should be used
for head and footer sections too)
- Page-template now supports extendable (custom) pagetemplates, to be
defined by plugins and/or themes using the framework