Adding a new table called activity_log to log who runs what and when
Merge branch 'master' into DAT-706
Removing unneeded imports in migration script
Merge pull request #123 from ekampf/feature/fixmyql

Handle empty data returned by queries
Adding a constant to activity model
Merge pull request #122 from hailocab/DAT-706

Adding a new table called activity_log to log who runs what and when
No need to use github style authenticated URLs, it can just break things.
Bigquery support
Added try..except to handle missing imports
Merge pull request #124 from erans/master

BigQuery support
Fix: the pivot table visualization was messing up other visualizations
by changing the data.
Pie chart: show value and not only %
Fix: custom visualization name was ignored (ref #127)
Hackish way to show dates as dates in the table and timestamps
as date+timestamp.
Merge pull request #128 from EverythingMe/fix_visualizations_issues

Several visualizations related fixes.
Fix: compile all views.
Fix: don't sort values when there is more than one category
Merge pull request #130 from EverythingMe/fix_category_chart_sorting

Fix: (in category charts) don't sort values when there is more than one category
#121 query view page
#121: QueryViewCtrl with 'strict mode'