This was incorrect use of PARAM_CLEANHTML for these inputs.
This fix also adds some unit tests to try to verify that this does not
break again in future.
- Added possibility for editor form field to specify return_types (default FILE_INTERNAL | FILE_EXTERNAL | FILE_REFERENCE)
- For assignment, workshop, quiz essay submissions and form posts do not allow FILE_REFERENCE
- Fixed mod_resource return_types, reset them to default, because filemanager does not know how to work with FILE_EXTERNAL links
- function get_mimetypes_array() now contains also information about filetype groups and language strings
- use 'smart' human-readable mimetype description
- never determine filetype group based on filetype icon image! remove function mimeinfo_from_icon()
- get rid of class filetype_parser and file lib/filestorage/file_types.mm, replaced with functions file_get_typegroup(), file_extension_in_typegroup() and file_mimetype_in_typegroup()
- support multiple icon sizes, not only 16 and 32
- retrieve filetype icon only using proper functions file_..._icon() from lib/filelib.php throughout the code
- increase size of repository thumbnails to 90 and icons to 24 (will take effect when new icons exist)
1/ type/match/tests/walkthrough_test.php - tests are failing randomly, looks like some weird randomisation is going on there - see TODOs
2/ type/multianswer/tests/upgradelibnewqe_test.php contains invalid expected value - see TODO