Refresh clock when the dashboard reloads
Configuration of auto refresh period

- Adds configuration of the available periods, as well as the default
- Adds an interactive setting to the preferences page
Merge pull request #254 from urbanairship/issue-226-refresh-enhancements

Issue #226 refresh enhancements
Add current refresh setting to tooltip

issue #226
Adding 'median' to summation and presentations
Add default
Merge pull request #255 from urbanairship/issue-226-refresh-enhancements

Oops. Bugfix for refresh button tooltip
Merge pull request #256 from urbanairship/issue-241-add-median-to-summation

Adding 'median' to summation and presentations
Bump version
Implemented duplicate button for queries
Merge pull request #259 from urbanairship/issue-258-duplicate-query-action

Implemented duplicate button for queries
Add bootstrap-datetimepicker component
Recent/custom range picker switching
Filling in rendering and event handlers
Comments
Set the 'until' field to now for now
dark mode support
Use UTC, quantize to 15-minute intervals
Handlers for setting from/until in custom range picker
Merge pull request #260 from urbanairship/issue-183-custom-daterange-picker

Issue 183 custom daterange picker