Add basic backend
Fixes
Add JSON API
Allow forgery
AJAX test.
Accept JSON
Add pushState
Fix colors URL
Loading a palette URL renders color properly now.
precompiled assets
added production database
CSS error fixed for production.
Uncommenting secrets.
Added rgb and hsl to Color.
Added serializer for a better data transfer to http request.
Removed credits.
Fixed missing id on editPanel.
back/forward buttons support.
Added act_as_list to ensure correct position.
Removing unnecessary inpalette attribute for color.