If sending error to RT, try to get mail also from AdditionalInformation

 - move emailPattern from modules to Utils.java
 - add code using emailPattern and reading data from
   session.getAdditionaInformation to RTMessageManagerBlImpl
 - remove unused imports
Merge pull request #459 from stavamichal/getMailFromSessionWhenReportingToRT

If sending error to RT, try to get mail also from AdditionalInformation
GUI: Redirect to targetexisting when user can't extend membership in VO
Merge pull request #460 from zlamalp/target

GUI: Redirect to targetexisting when user can't extend membership in VO