update MozStumbler urls to new canonical location
update `circus.ini` to better match production settings

adding `--no-execv` for celery avoids problems with missing environment
variables in the celery worker processes, as the forks don't copy over
the complete environment from the parent process
extend heka_logging to deal with konfig's include/extends syntax
make sure to configure the heka client in each celery process

this avoids `NoneType doesn't have write` attribute errors, but I still
don't get any stats for tasks locally
extend `hekad.toml` to capture non-http timers
capture heka timings for content tasks
extend tests with more complete stub data
try a nicer way to integrate heka and celery
Merge pull request #60 from hannosch/heka-celery-nicer

Extends the DatabaseTask to emit heka timer events
add OSM attribution to the map, closes #54
update to mapbox.js 1.5.2
move `blacklist_moving_wifis` test into `TestWifiLocationUpdate` class
extend the blacklist test to have wifi entries and document things a bit
move moving wifi detection into continous wifi location update task

this avoids having one huge and costly daily task
fix merge error in changed task
drop no longer needed lat/lon indices on cell_measure table
remove cleanup/catch-up tasks and no longer needed measure_id indices
Merge pull request #65 from hannosch/continous-wifi-movement-check-2

Continuous wifi movement check
remove the daily `schedule_new_moving_wifi_analysis` task

it got folded into the `continuous-wifi-location-update` task
don't get the entire history of wifi measures when updating the location