Refactor UsersController#create

* Simplify controller action
* Extract service classes
Fix category ordering on categories page. I broke it.
Move columns around on wide categories page
Merge pull request #1733 from voisintotoro/newmaster2

Updated French translation and fixed the fr_FR: to fr:
make sure extension-based oneboxes are first to run
Got rid of buggy yepnope spaghetti, however mobile detection really should be driven from the server.
rails master compatability
Merge pull request #1658 from salbertson/sa-refactor-users-controller-create

Refactor UsersController#create
work around odd scoping bug in Rails
to_a not needed
Update client.zh_CN.yml
Merge pull request #1734 from ofgeek/patch-1

Update client.zh_CN.yml
Double reading speed estimate. People skim.
FIX: Look up a url without the query string if it couldn't be found with it.
Cold/Hot classes in Topic Map
Update client.it.yml to have category section

As outlined in this question:
http://meta.discourse.org/t/all-categories-on-non-english-sites/11417
Automatically convert some quotes to blockquotes
Show topic and post counts by day/week/month/year on categories page
Merge pull request #1735 from piac/patch-2

Update client.it.yml to have category section
Fix topics_year, topics_month, topics_week for uncategorized category