Add category list and detail templates and views.
Change category header to content links.
Change max rating on local environment.
Add ignore rule for user media files.
Add navigation links for home & category list. Closes #2

* Add links in home as specified.
* Add 'active' class on <li> when section is accessed.
Add spanish and english translation support. Closes #4

* Add translation method to strings in templates.
* Add locale directory name in base settings.
* Add emtpy links to change language.
* Add available languages and change form
* Add ignore rule for compiled translation files.
* Add more content to translation files.
* Add locale middleware and djago-rosetta application.
* Change local cache config required by django-rosetta.
* Add rosetta URL configuration.
* Add translation for text.
* Add django-rosetta as base requirement.
* Remove fuzzy
* Updated PO using rosetta.
* Change locale path using SITE_ROOT + join().
Merge branch 'issue#4-Add_i18n_support_for_spanish_english' into develop

Conflicts:
	.gitignore
	poppurri/templates/base.html
	poppurri/templates/category_detail.html
	poppurri/templates/category_list.html
	poppurri/templates/mixture_detail.html