Releases for HTML import

- Tested under PHP 7
- Thoroughly tested under GovCMS 7.x
- An example sub-module that automatically creates book parent (publication) and book (publication section) pages so you don't have set them up yourself.
- Entity reference support
- Workbench support
- Content administrators can specify the language of imported pages if locale module is enabled
- Anchor reference links are re-established using aliased URLs when they are available
- Some other minor bug fixes and improvements

Allowed html tags can be configured through the import web form