Merge pull request #447 in ZP/z-push from feature/ZP-1134-check-if-already-synchronized-folders to develop

* commit '8ff33644':
  ZP-1134 Check for 'secondarycontact' capability support to send additional contact folders, print capabilities in DEBUG level.
  ZP-1134 Fixed comments.
  ZP-1134 Set TypeReal on all SyncFolder that pass through ChangesMemoryWrapper from cache, fixed support for PHP 5.4 that does clone objects from the cache (requires some explicit setting), moved patching of folders from Synchronize() to ImportFolderChange() to update the cache correctly (requires following AddFolder() in PHP 5.4), introduced ChangesMemoryWrapper::SYNCHRONIZING flag to indicate to Config() if updates on folders should be performed (should e.g. no for FolderUpdate command), patch and re-export as new (ADD) secondary contact folders that were synchronized as standard (SYNC_FOLDER_TYPE_USER_CONTACT) before (ticket task).
  ZP-1134 Configured additional SyncFolder objects are now generated on demand - not in ZPush::CheckAdvancedConfig() anymore, uses DeviceManager->BuildSyncFolderObject() to build SyncFolder objects.
  ZP-1134 Added DeviceManager->IsKoeSupportingSecondaryContacts() to check if secondary contacts should be synchronized, renamed DeviceManager->getAdditionalSyncFolderObject() to DeviceManager->BuildSyncFolderObject() and made it public - nethod updates unpatched contact folders for correct processing by ChangesMemoryWrapper.