* feature: save application metrics to db for alerting
However, alerting will not work because ResolveGlues() is broken.
Can add workaround after state_translations alerting is merged
Does not update all applications yet, not sure if that should be done here or in another PR.
Introduces two handy functions dbDeleteOrphans() and array_by_column(). Will replace those in other locations after this is merged or separate them out if this is not merged.
* remove accidental inclusions
* Add db schema
