Fix things

CHANGE: Boost priority of task queues spread amongst different sites with same requirements
ObjectLoader had a reFilter that prevented anything from loading
FIX: #1132 Typo [] -> {}
FIX: #1130 Typo __close -> close
FIX #1092: Lower the 'bucket length has changed' message to warn
FIX #1062: Remove deprecated stuff
FIX #1128: Failed optimizations will still update the job
FIX: Retrieve orphaned jobs as list of ints instead of list of tuples
FIX: Added min to the deletion of accounting records
HACK: Add datetime to the OptimizerExecutor because eval might require it
NEW: Add some validation to the job records because of weird data coming from YANDEX.ru
NEW: Faster deletion of accounting records