* remove unused elements from tasks page
* remove components
* client: tasks: wip
* tasks: order, start styling them
* more tasks works
* habits controls
* more work
* tasks icons
* split columns in their own component
* implement tags for tasks
* wip
* add columns description
* try to freeze content object
* deep freeze the content object, start to implement stable
* freeze at the /common level
* go back to freezing content only on the client
* use deep-frezze-strict to support phantomjs
* use own version of deepFreeze
* update comment about deepFreeze