Fix mapathon detail endpoint in dev setup

[NicolasGrosjean]

• Resolves [BUG][DEV] Running /mapathon/detail #328

Issues solved by this PR:

• psycopg2.errors.UndefinedFunction: function public.editors_per_user(bigint, unknown, unknown) does not exist
• configparser.NoSectionError: No section: 'TM'
• add fixtures

[kshitijrajsharma]

I am very happy with this PR , This fix will allow user to do TM related Code setup on galaxy API , I haven't focused on TM as it is optional , However I won't recommend using dblink to talk to database Since we are already connected to TM from galaxy API I will recommend to link the result from API End directly , so that further development on the function will be easy , cc : @d-rita Tagging you here , If you have any recommendation why you went with dblink for the this editors_per_user as a database function itself ! I will approve these changes for now ! Meanwhile we can improve functionality of detailed endpoint later on !

[d-rita]

@kshitijrajsharma the editors_per_user function is the remaining dblink function from the earlier TM stats implementation by @omranlm. But since we can now set up and talk to the TM database directly via the API, I agree it is better to remove all dblink functions.