[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