Routing filter

[benjaminvialle]

This pull request is the result of the discussion between @jerboaa, @danielstjules, me and Alan and Sue from UofT.

The global behaviour of MarkUs concerning locale is unchanged. I removed a gem we used to do locale filtering. I'm now doing locale filtering with Rails 3 framework.

Once this patch will be integrated into master, I'll backport it into MarkUs 1.0.x branch and release MarkUs-1.0-rc1

poke @jerboaa @danielstjules @reidka

[jerboaa]

Have you considered updating:
https://github.com/MarkUsProject/Markus/wiki/InstallProdStable
https://github.com/MarkUsProject/Markus/wiki/ApacheMongrel (make this unicorn?)
https://github.com/MarkUsProject/Markus/wiki/MultipleHosting

[benjaminvialle]

@jerboaa Yes! That's the next bullet point on my TO-DO list :)
I wanted to have several instances of MarkUs 1.0 running in production before updating docs.

[danielstjules]

With Ruby 1.8.7, I'm getting:

/Users/danielstjules/GitHub/Markus/config/routes.rb:6: syntax error, unexpected ':', expecting kEND (SyntaxError)
  scope "(:locale)", locale: /en|fr/  do

Just need to revert to the old hash syntax to fix. :)

[danielstjules]

Looks good!