Added module def_MailingListManagerEmail for creating of new mailing list
Added getAttributeDefinition into module def_MailingListManagerEmail
GUI: Switched default error report RT queue from 'perunv3' to 'perun'.
Merge pull request #23 from zlamalp/fix_gui

GUI: Switched default error report RT queue from 'perunv3' to 'perun'.
GUI: Usability tweaks (show processing buttons)
Merge pull request #24 from zlamalp/gui

GUI: Usability tweaks (show processing buttons)
Merge pull request #25 from papperwing/Mailing_list_manager_email

Attribute for mailing list manager email
Merge master into clear_shells