make a mock ga function when in dev mode

and remove the ga undefined check from ga_track_event
make ga-tracked links respond to meta-click
fix View Source Files link behavior

expand gaTrackLink to allow delegating selectors
in addition to actual jquery objects
bump frequency of new case processing flag
Merge pull request #4897 from dimagi/cz

bump frequency of new case processing flag
update staging.yaml

[ci skip]
Merge branch 'gaTrackLink-rebase' into autostaging
Merge remote-tracking branch 'origin/subscription-no-contact-info' into autostaging
Merge remote-tracking branch 'origin/revert-4205-revert-3841-86347-2' into autostaging
Merge remote-tracking branch 'origin/masterlist-workflow' into autostaging
Merge remote-tracking branch 'origin/bulk-app-translate' into autostaging
Merge remote-tracking branch 'origin/hq-dropdown+locations-for-everyone' into autostaging
Merge remote-tracking branch 'origin/custom-data-choices' into autostaging
Merge remote-tracking branch 'origin/vellum-staging' into autostaging
Merge remote-tracking branch 'origin/custom_location_data+locations-for-everyone' into autostaging
Merge remote-tracking branch 'origin/custom_location_data+system-custom-data+locations-for-everyone' into autostaging
Merge remote-tracking branch 'origin/custom_location_data+system-custom-data' into autostaging
Merge remote-tracking branch 'origin/locations-for-everyone' into autostaging
Merge remote-tracking branch 'origin/custom-case-list-pane' into autostaging
Merge remote-tracking branch 'origin/quickview' into autostaging