Update Procfile.dev to use celery.
ignore celery files
fix add_global_filters_to_dashboard migration script
fix migration add_text_to_widgets
[#243] dashboards api will not return query results by default
[#241] fix textbox widget layout
Query.to_dict never with results
Merge pull request #248 from EverythingMe/243-db-requests

#243 dashboards api will not return query results by default
testing infra: updated Karma and Grunt
testing infra: basic QueryViewCtrl tests
rd_ui: fix failing unit test
update ci config
Merge pull request #251 from EverythingMe/tests

setup Karma unit tests
[#245] Add refresh button to query view page
Merge pull request #247 from EverythingMe/245-refresh-btn

[#245] Add refresh button to query view page
perf: HTTP caching headers for /api/query_results [fixes #228]
Merge pull request #252 from EverythingMe/perf

perf: HTTP caching headers for /api/query_results [fixes #228]
Merge remote-tracking branch 'upstream/master'