The current solution has two major issues. Firstly, it is using the
session key in the file URL, allowing anyone with the link to steal
the identify of the poster. Secondly, the links are not presistent
and become broken as soon as the server is restarted. Let's not
support this any more until a proper solution is found in MDL-26454.
- get_file should have a request timeout and throw an exception with the details (i.e. timeout reached) if download can
not be completed
- corrected phpdocs
- 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)
