ZP-551 #comment add configuration parameter to enable/disable chunked foldersync

git-svn-id: https://z-push.org/svn/z-push/trunk/src@1914 b7dd7b3b-3a3c-0410-9da9-bee62a6cc5b5
ZP-250 #comment autodiscover installation file

git-svn-id: https://z-push.org/svn/z-push/trunk/src@1915 b7dd7b3b-3a3c-0410-9da9-bee62a6cc5b5
ZP-562 #comment Improve autodiscover logging

git-svn-id: https://z-push.org/svn/z-push/trunk/src@1920 b7dd7b3b-3a3c-0410-9da9-bee62a6cc5b5