Add media types lookup table
Related to #206 (closed).
This MR adds the media_types
lookup table.
Note: I'm not updating the DB ER diagrams just yet. We're going to do a lot of changes as part of #206 (closed), and these (including this MR) are going to be merged into an intermediary branch. I'll update the diagrams only once, before merging that branch to master
.
Edited by João Pereira