Add support for nested paths to reorderResultsByKey

[jack-guy]

We have a bulk GET endpoint returning a response like this:

{
    foo: [{
         bar: { id: ... },
         baz: { ... },       
    }]
}

we want to be able to reorder the results by "bar.id". I switched the sort for reorderResultsByKey to use lodash.get so that a dot-separated path can be supplied for that config.