config/locales/tr.yml: correct this_file_language

this_file_language is translated literally and the phrase:
"İngilizce (US)" means "English (US)"
However this key should list the language of the current file which in
this case is Turkish.
Depend on spree ~> 2.1

We probably dont need separate branchs for spree and 2.1 right now
Allow bumping selenium-webdriver on bundle update
No need to have paperclip in Gemfile anymore

We have a paperclip beta release now with rails 4 support
Include pg in Gemfile

Building and running specs is way faster on postgres
Add missing French translations

For:
* 'Card has expired'
* payment method
* user in the admin tab
* no_payment_methods_available
* add_to_cart
* emails

Fixes #279
Depend on spree_core 2.2.0.beta
Changing format for date_picker so you dont get errors while editing a product. Now its format: ! '%d/%m/%Y' as it should be

Fixes #281
[Turkish] Edited some typos and used more appropriate translations for some terms.

Fixes #282
Synced pt-BR.yml with en.yml

Fixes #284
Changed email-total misspelling.

Fixes #283
Added translate for pt-BR in admin/tab/users

Fixes #285
[ru] Fix duplication of year in js_format
add correct punctuation at the end of sentences and makes them more explanatory

Fixes #286
fixing typo on word 'Instruções'