Important notice:

Changed param "type" to "block_type" since it interferes with {content_module} tag

Bugfixes:

- #5101: page_tab "options" was shown to users with no permission to edit page options if a content block was assigned to that tab.

- #5097: link to missing css removed

- fixed mime-type issue (added preference to toggle mime-type usage on/off)

- fixed path issue where thumbnails were not shown

- other minor bugfixes

Improvements:

- added MLE support

- compatibility with CMSms 1.8

- added param "show_clock" to enable/disable the time dropdown of blocktypes "date" in backend

- added param "date_format" to format timestamp of blocktypes "date" in frontend

- added param "description"

- added bulk function to set all pages to AdvancedContent

- added compatibility with {content_module} tag