This optimises a bit the routing map, and make cleaner separation.
Make the base url for admin pages customizable via `administration.base_path` variable in cms.ini
note: could be /admin, /roc-admin, or ..
It is possible to have a specific theme for administration via the variable "administration.admin"
- create term, vocabulary, add or remove term from vocabularies, ...
Fixed content editing related to taxonomy (especially with multiple terms vs tags).
Fixed various SQL storage issue related to taxonomy and vocabularies.
Added CMS_RESPONSE.wsf_theme as helper.