GUI: do not display re-captcha on mail validation

- Skip re-captcha if ?m=[code]&i=[code] are passed in URL (mail validation).
- Fixed menu display on mail validation.
- Added more space in verification failed message.
Merge pull request #407 from zlamalp/captcha

GUI: do not display re-captcha on mail validation
RPC-LIB: Change to prevent NullPointerException

when polling for AuditMessages from RPC (on RPC re-deployment)
LDAPC: fixed error message

- When processing of some AuditMessage fails, pass message ID
  to exception text in logs, not message itself.
Merge pull request #408 from zlamalp/rpclib

RPC-LIB: Change to prevent NullPointerException