shelve: return the shelved node as part of bundle application
It make sense to have the function in charge of unbundling the shelved revision
also return the node of that revision (when the data is in the bundle).
This will help us to handle unnatural state where the unshelved change already
exists in the repository.
{
// Enforcing
"eqeqeq" : true, // true: Require triple equals (===) for comparison
"forin" : true, // true: Require filtering for..in loops with obj.hasOwnProperty()
"freeze" : true, // true: prohibits overwriting prototypes of native objects such as Array, Date etc.
"nonbsp" : true, // true: Prohibit "non-breaking whitespace" characters.
"undef" : true, // true: Require all non-global variables to be declared (prevents global leaks)
// Environments
"browser" : true // Web Browser (window, document, etc)
}