Limits/Offsets and When Filter in Stacky API

Most Stacky API calls now have limit/offset query arguments.
The default limit is 50 and the hard limit is 1000.
This only adds a limit, all pre-existing limits on results are still included.
(ex. /stacky/reports/ only returns the last day's reports.)

Exceptions:
/stacky/deployments/
/stacky/events/
/stacky/hosts/
/stacky/kpi/
/stacky/kpi/{tenant}/
/stacky/watch
/stacky/show

Some Stacky API calls now have a 'when_min' and 'when_max' query argument.
The 'when' filter is on:
/stacky/uuid/{service}/
/stacky/request/
/stacky/search/{service}/