Added new percentage_table item

Displays a single-row table with each data series’ sum as a percentage
of the total
Added option to include sums
Update gallery to include percentage_table
Added a few missing rules to polish solarized-light a little
Merge pull request #247 from urbanairship/solarized

Added a few missing rules to polish solarized-light a little
Merge pull request #246 from urbanairship/percentage_table

Added new percentage_table item
Deleting some unused CSS
Don't refresh in edit mode

Also hide the refresh menu in edit mode.
Merge pull request #253 from urbanairship/issue-248-disable-auto-refresh

Don't refresh in edit mode
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