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
Merge branch '2-1-stable' of https://github.com/spree/spree_i18n into 2-1-stable
fruga frugalização primeira versao 2