Moves poll to /datatron

Leaving index for a closure message
Refactor CSS classes to reuse them on the index page
Add content to index page
Adds bar chart with poll results on index
Create API endpoint to get answers per day
Add area chart to display poll answers per day
Change "daily" endpoint to return votes only for top-categories
Gets a sorted dump of selected categories in poll answers
Fixes name conflicts in graph vars
Fixes chart padding for index page

+ Fixes bar-chart padding
+ Adds padding to main container
Scope poll results between Oct 23 - Nov 16

+ Adds time-range params to #votes_by_category and #daily
+ Fixes time-zone parsing in area chart
+ Tests queries with time-ranges
+ A small test refactor
Replace bar-chart x-labels for a legend in smaller screens
Merge pull request #26 from wilhelmbot/closure

Closure