added webdav context for webdav requests

other:
milton version upgraded
Added redirection filter
fix http connector use
One filter for both WebDAV and fileTransfer services

- removed milton's context files
- creation of milton's HttpManager obj embedded
- removed WebDAVRootFilter
package reordered and log fixed
added .gitignore
Updated from branch 'develop'
removed unnecessary dependencies
Merge pull request #3 from italiangrid/feature/STOR-376

Feature/stor 376