Set configuration for using Gettext
Converting simple t-keys to Gettext format
Add directory locale with basic PO/POT file
Fix user_session.feature scenarios

Fix needed because of different strings
on the username/password recovery page.
Difference is in strings of alchemy helpers(gettext vs rails).
Removed method localized_text_present from general_steps.rb

Also fix all occurance of the method to text_present with
gettext string
Merge pull request #397 from jzigmund/simple_gettext

Gettext conversion - simple t-keys conversion