Fix databse problems

[aroary]

Database disconnects after timeout.
Patch currently reinitialize on a timer.

project_bot/utils/database.js

Line 17 in 1904ae8

setInterval(() => db = pool(), 600000).unref();

[aroary]

Permanent uptime uses up resources too fast.

project_bot/utils/database.js

Line 17 in 1904ae8

setInterval(() => db = pool(), 600000).unref();