Use a JSON serializer to serialize shortcut data

[betsegaw]

This will allow us to use the same method to write out various settings in the future.

Proposed format is:

{
    "ver":"v1",
    "shortcuts",{
        "v":"devenv",
        "i":"iexplore.exe"}
}

@mjrichmond any thoughts? I can do the implementation, which should be quite simple but I wanted to see if you had any input :)

[betsegaw]

Fixed in 07d164d