Issue/#44
This merge adds a media package and the option to load media from an AGES ares file. The doxa.yaml config file now has an additional entry as follows:
``
media maps, for loading into database from a file
media.maps: - /{your path}/media_gr_GR_cog.ares - /{your path}/media_en_US_public.ares ``
Currently, these files are found in the AGES templates repo in github.