Merge pull request #377 from ahilles107/v4.2.1

translations.
Merge pull request #378 from ahilles107/v4.2.1

add missing strings from forms to localizer
use users translations section
Fixes the urlparameters smarty plugin
Merge pull request #379 from terwey/urlparameters_fix

Fixes the urlparameters smarty plugin
Sets and removes the cookie when an admin logs in and out
Forces the confirmation email to always use the system email address
Merge pull request #381 from terwey/IM-855

Forces the confirmation email to always use the system email address
Merge pull request #383 from ahilles107/v4.2.1

translatiosn taraf
Merge pull request #380 from terwey/CS-4696

Sets and removes the cookie when an admin logs in and out
Merge pull request #384 from ahilles107/v4.2.1

add more translations
During registration a useful error message is now printed
Merge pull request #385 from terwey/registration_error

During registration a useful error message is now printed
translation