Merge pull request #292 from zlamalp/fix

REGISTRAR: fixed mail definition update
Merge pull request #293 from zlamalp/fixGui

GUI: do not display connection lost if not timeout
Merge pull request #281 from stavamichal/fixUpdateUserAndUpdateNameTitles

Fix updating user
Merge pull request #282 from stavamichal/fixUsingInternalErrorExceptionInUpdateUserAndUpdateNameTItles

Fix throwing exceptions in methods updateUser and updateNameTItles