Potentially restructure the factoids database

[ajax146]

The current factoids database is being stretched to it's limits, especially with aliases

Rewriting the database structure to be something like the following 3 tables:

Table: factoids
UUID    guild_id    plaintext_message    json    creation_time     hidden

Table: calls
UUID    guild_id     call_text     factoids_UUID

Table: jobs
UUID    factoids_UUID    channel    cron_config

This would allow a much more robust and easier-to-use database structure. It would be easier to modify and expand the factoids extension further if we choose to.

This is not a high priority, but something to think about
This would require a pretty much fundamental rewrite of the factoids system