[MOD] Updated milton maven repository and version
[ADD] Initial WebDAV locking support
[MOD] Basic (but working) support of WebDAV locking
[MOD] WebDAV: refactored the existing implementation to allow integeration of Milton2
[MOD] WebDAV: moved Milton1 specific classes to a new package
[MOD] WebDAV: added javadoc; fixed year
[ADD] WebDAV: added initial implementation of Milton2 WebDAV binding
[ADD] WebDAV: create webdav lock database if it does not exist
[ADD] WebDAV: filter the webdav lock database when listing resources
[ADD] WebDAV: prevent users from accessing the lock database.
[ADD] WebDAV: implemented check for indirect locks
[ADD] WebDAV: check if milton2 enterprise is available and use it
[ADD] WebDAV: folders should implement createAndLock()
[MOD] WebDAV: small clean-up
[FIX] WebDAV: fixed checkstyle warnings
[FIX] WebDAV: catch all exceptions when checking for milton2 enterprise
[ADD] WebDAV: implemented refresh lock
[FIX] WebDAV: fixed createAndLock
[FIX] WebDAV: fixed integration of the enterprise version of Milton2