Set enable_no_prefix_checkbox to false by default
Prepared urlpage, remove custom url from seopage
Renamed setting userdef_canonical_url to custom_canonical_url
Renamed setting enable_title_preview to title_preview
Renamed setting enable_no_prefix_checkbox to no_prefix_checkbox
Renamed setting enable_pagerank_checker to pagerank_checker
Added noindex_checkbox setting
Added new right: url_default
Added settings seopage and urlpage