Views support

First, thanks to all for the great module.

Currently if we add node edit/delete link field in Views, Module Grants is not "asked" about the access permissions on the node. And if the user does not have operation access the link is still displayed, when we click on it we get access denied.

I have created a simple sub module which adds integration with views. It consists of "node edit" and "node delete" link fields which use module_grants_node_access function.

Please review and commit if you think it can be useful to others.