Extraction of texts into locale files.

I created a t() helper to save writing the shoppe scope all the time.
Also makes the templates cleaner as one can use the :label syntax instead of "shoppe.label"

I have sorted the keys alphabetically. This is much better than scoping them as there is no logical scope for texts (other than for models or views).
Lexically sorted one can at least find them easily

There is a free service to keep several translations in sync, but i forget the name.