Merge remote-tracking branch 'upstream/master'
Merge remote-tracking branch 'upstream/master'
Additional chart controls: toggle all, show total
Update to latest pivottable. (fixes #211)
Merge pull request #224 from EverythingMe/feature_toggle_series

Feature: additional chart controls - toggle all, show total
Fixed spelling mistake of "Visualation" to "Visualization"
Merge pull request #225 from hailocab/spelling-mistake-1

Spelling mistake 1
Add pace, to indicate while things are loading (#24)
Add reload in case of error for dashboards
Merge pull request #226 from EverythingMe/feature_toggle_series

Progress indicator for requests and reload on failure for dashboards
Update migration for new structure
Show celery flower url inside an iframe.
Merge pull request #227 from EverythingMe/feature_celery_status

Show Celery Flower in an iframe.
fix starting of celery in Heroku
Make sure when users are created that it is with the default groups and not permissions.
Merge pull request #230 from jeremi/fix-default-groups

Add default group when user is created
Merge pull request #229 from jeremi/fix-heroku-procfile

fix starting of celery in Heroku
only use json in celery for serialization. pickle is going to be deprecated soon
Merge pull request #231 from erans/master

Force the use of JSON in Celery
Revert "Merge pull request #231 from erans/master"

This introduced some unicode issues. Reverting until resolved.

This reverts commit 8731a8d27333803a2129740605b08f351bb72196, reversing
changes made to 90157157df25f6e8707c444aa93745da38f7d372.