Add config for browser module on DVSA site activity dashboard
Automatically create "other" category for non-defined data groups

Where a group in grouped data does not have an axis/line configured, automatically add its values to an "other" category.
Merge pull request #706 from alphagov/feature/browser-module

Feature/browser module
Update location of data-group for customer-satisfaction
Merge pull request #708 from alphagov/feature/book-driving-test-customer-satisfaction

Update location of data-group for customer-satisfaction