route for generation/enabling of referral for user(s) done? the frontend
is mostly done, but functionality is not there yet. Route for finding
and displaying referral to user is done. Also the config option for
referral is there, in user page settings.
An almost identical set of functions to the discord/telegram/matrix
storage ones is now used for accessing invites. No more
parallelism-related issues, yay. Need to do this for everything
eventually.
Get/GetKey/SetKey/DeleteKey methods are used for access to
email/discord/telegram/matrix, everywhere. Mutex added for each, avoids
concurrent read/write issues. Will also make potential transition to
database easier.