s/app.econfig/app.cfg
closing TODOs like there's no tomorrow
this is a big nitpick. we couldn't use app.config as Quart overrides it, so we went to 'app.econfig' to represent 'elixire config', but 'cfg', i think, represents it better. we can't really override app.config with our own cfg, as quart has its own internal default config keys we'd be destroying
this MR will conflict with everyone else, so they must be merged beforehand, and then i can work on solving the conflicts.
made by doing the following:
$ sed -i 's|app.econfig|app.cfg|g' api/**.py
$ sed -i 's|app.econfig|app.cfg|g' tests/**.py
$ sed -i 's|app.econfig|app.cfg|g' manage/**.py
$ sed -i 's|app.econfig|app.cfg|g' run.py