streamserver: use internal setting for authentication

the streamserver should not depend on the webinterface,
so introduce our own setting, instead of checking an
external openwebif setting.
Ensure that the ecm info in softcamSetup is the latest
streamserver: fix potential segfault on authentication

crypt_r returns NULL when the salt string is empty
(which happens when the password hash is empty)
ServiceInfo: small changes to the length of the text

As suggested by Dima73
Merge remote-tracking branch 'OpenPLI/master'

* OpenPLI/master:
  ServiceInfo: small changes to the length of the text
  streamserver: fix potential segfault on authentication
  Ensure that the ecm info in softcamSetup is the latest
  streamserver: use internal setting for authentication