filter functions based on file size

Some contracts may need to place a restriction on file size due to the services they work with, for example there is a maximum upload size for Facebook and you can't send a 3GB movie through gmail.

In this way, an application needs to be able to tell Contractor how large the target item is so that Contractor can either filter out or make insensitive services that can't take large files.

Launchpad Details: [#LP782759](https://bugs.launchpad.net/bugs/782759) Daniel Fore - 2011-05-14 18:37:28 +0000