4.1.5

Minor bugfixes.

• Bug #422: Values of tree field are not translated
• Bug #458: Detect SSL without port
• Bug #459: Filter in grid is shared accross several grids
• Bug #460: Inconsistent page name in pages mgmt
• Bug #461: Sitemap is deleted during cache clear
• Bug #462: Permissions issue
• Feature #344: Introduce more hooks
• Feature #466: Add config: allow animated gifs
• Feature #468: Properly escape HTML in debug output