[#69755706] Add delete link to comment

Add a link in the dom for comments.
Add condition so that delete link only shows when current user matches
the user who authored the comment.
[#69755706] Add can can rules for comment

Comment delete and update are only possible by the user who authored
them.
[#69755706] Wire up a simple delete action

Add an event handler on the delete button of a comment.
Add the controller method to destroy the comment server side.
Enforce authorization using can can.
[#69755706] Delete widget

Clicking on the delete text now opens a confirm button in its place.
Clicking on the confirm button triggers the destroy event.
Merge branch 'master' into comment_delete

Conflicts:
	app/assets/javascripts/kiwi/components/comments/comments.js.coffee
	app/assets/javascripts/kiwi/models/comment.js.coffee
[#69755706] New rendered view for deleted comment

Add a getTemplate check in the single comment to render a deleted
comment templated when the event is deleted.
Add a delete ajax call to delete an event.
Add data wiring to have the delete button delete the event.
Return the name of the deleted in the comment jbuilder.
[#69755706] Put upvotes back in deleted template

Add upvotes to deleted comment.
Remove side margin.
Merge pull request #139 from Forekasting/comment_delete

Comment delete