Enhacement #826

Now you can send media without downloading the file, just knowing the size and the base64 hash.

TODO: some minor fixes in func.php probably tomorrow
Update whatsprot.class.php
Update func.php
Send media knowing size and hash

Now broadcast media knowing only size and hash
Merge pull request #828 from mgp25/patch-14

Send media files knowing only the size and hash - Enhancement #826