Showing related categories
small design refactorings
Corrected english language.
Some improvements to categories:

* Selected categories are checked in ontologies#edit.
* Show users ontologies on the right in categories#show.
* Refactoring.
Merge branch 'staging' into 714-fix_category_allocation
Converted categories JavaScript file to CoffeeScript.
Merge branch 'staging' into 714-fix_category_allocation

Conflicts:
	app/views/ontologies/_menu.html.haml
Merge pull request #715 from ontohub/714-fix_category_allocation

Improvements to categories.

* Show categories of ontology in tab.
* Check selected categories in Ontology#edit.
* Refactoring.
* Converted categories JavaScript to CoffeeScript.