Decide on best cache timeout and improve caching of absolute and relative datetime data

[cortadocodes]

The cache is currently set to an hour, meaning if trying to display data for the same set of inputs on the dashboard within an hour, the database is not re-queried and the same results are shown. The timeout could be increased (for fewer database queries) or decreased (for quicker access to the latest data).

Caching could also be set up in a more adaptable way so that absolute datetime data is cached for much longer while relative datetime data is cached for less time.