Change mediatypes in the UI to something more user friendly #160
Description
A normal user cannot be expected to know what the mediatype of a Word document is. The list of media types should be changed to a list of easy to understand names.
Other considerations:
- Distinguishing between subtypes of a media type is also needed (e.g. xml can be also tei, which can be also tei-dta).
- Sometimes a set of media types are equivalent, due to historical reasons (e.g. audio/wav, audio/vnd.wave, audio/x-wav)