Fix throwing exceptions in methods updateUser and updateNameTItles

- do not throw internalErrorException in impl when lastName is null, instead of it throw exception in entry and user IllegarlArgumentException
- if user is not updated, do not throw exception
- if user is not updated, do not log msg to auditerLog
- fix tests for these methods
Merge pull request #282 from stavamichal/fixUsingInternalErrorExceptionInUpdateUserAndUpdateNameTItles

Fix throwing exceptions in methods updateUser and updateNameTItles
Detect Oracle DB from the DriverName.
Merge pull request #283 from tauceti2/extSourceSQLFix

Detect Oracle DB from the DriverName.
GUI: fixed spelling authentications -> authentication
Merge pull request #284 from zlamalp/spell

GUI: fixed spelling authentications -> authentication
GUI: added link in footer to online docs
Merge pull request #285 from zlamalp/help

GUI: added link in footer to online docs
GUI: fixed create group dialog

 - do not disable create button, when user switches from sub-group case
   to group case and no parent groups are available.
Merge pull request #286 from zlamalp/fixes

GUI: fixed create group dialog