Reduce number of sqlite calls

[Operator873]

Probably because it's processing so frequently, but rcfeed slowly builds a significant lag. This is likely due to lack of optimization within the rcfeed reporting process. ORESfeed currently does not experience the same trouble.

[Operator873]

Upgrading to critical. All feeds are affected. Suspicious of multiple sqlite3 calls and instances. Also suspicious of dispatcher function and the parade of check() functions.

[Operator873]

Seems related insufficient resources within the toolforge instance. Both bots run sufficiently well on private server. Code still, no doubt, needs optimizations like reducing number of times dbase is queried per transaction.