* commit 'fe2bcf98':
  ZP-1110 Add KOE_CAPABILITY_SIGNATURES configuration option (default true).
  ZP-1160 Check if the Representing_ENTRY_ID is set in the properties before accessing it.
  ZP-1159 Fix typo.
  ZP-1159 Add maxLength parameter to Request::GetInputAsBase64(), log 10KB in an WBXML exception case and 4KB in the happy case.
  ZP-1159 Unset $start & $end to free memory immediately.
  ZP-1159 Improve memory consumption when sending emails with attachments.