When possible, only update AI DB on new data

[TheDiscordian]

Currently, when the qa plugin loads, it will rebuild the whole DB, including embeds. This can be costly and time consuming. Instead, it should do as much as possible to:

1. Find what needs to be (re)downloaded
2. Only generate embeds for new data, removing old data if necessary

Point 2 is the most important.

[tippi-fifestarr]

And can we by default make it "expert" on itself?

[TheDiscordian]

@tippi-fifestarr Dietrich has also mentioned such a feature. I think this is a good idea, but should exist in another issue.

[TheDiscordian]

Point 2 is implemented using the new mission control plugin, it's now trivial to remove old information. Point 1 still needs some techniques.