hife the translation message
Move the logic of meta description to a template tag.
- Create a meta description template tag that generates the description string.
- Use best-practices for translation. Instead of splitting the string into smaller pieces and concatenating them, we should make only one string that takes variables.
- Included new translations for the "ar" locale.
Updated translations for other languages.
Merge branch 'meta_description' of github.com:mdebbar/alfanous

Conflicts:
	src/alfanous-django/templates/base.html
Use the built-in LocaleMiddleware to handle languages and locales. Also allow locales that are not supported by Django-core.
Remove unnecessary back-slash before apostrophe.
Show the list of languages in their local names
Ignore dynamic_resources by git.
Some refactoring of the templates, mainly:
- Share dropdown
- Pagination
- Less string concatenation in templates
Merge pull request #358 from mdebbar/template_refactoring

Template refactoring
Better implementation of TRUE_FALSE
Move the page title logic to a template tag. Also fix html encoding with meta description.
Better IS_FLAG() which takes care of defaults.
Merge pull request #359 from mdebbar/true_false

Better implementation of TRUE_FALSE
Add Open Graph tags.
This adds a panel to the Debug Toolbar to show some profiling info about templates.
Deactivate the Debug toolbar for now.
Merge pull request #361 from mdebbar/template_timing

Add a panel to the Debug Toolbar to show extra info
Merge branch 'og_tags' of github.com:mdebbar/alfanous
Prevent any unexpected URL from rendering the whole website again.