Restructure config files

[ThomasR]

Current config file structure:

    "services": [
        {
            "active": true,
            "path": "exampleEndpoint",
            "file": "get-result.example.json"
        }, …
    ]

Better:

    "services": {
        "exampleEndpoint": {
            "active": true,
            "file": "get-result.example.json"
        }, …
    }

This makes sure that merging the foo.json with the foo.development.json file does not fail when the services are not in the same order.

[ThomasR]

Also, it would be nice to have a global "active" switch, in addition to the ones for each HTTP method

[ThomasR]

In order to achieve a mapping like this,

https://localhost:4242/example2/repos/SEITENBAU/mix-n-mock    ->    https://api.github.com/repos/SEITENBAU/mix-n-mock
https://localhost:4242/example2/users/SEITENBAU/repos         ->    https://api.github.com/users/SEITENBAU/repos
https://localhost:4242/example2/repos/exampleRepoEndpoint     ->    exampleRepoEndpoint.json
https://localhost:4242/example2/users/exampleUserEndpoint     ->    exampleUserEndpoint.json
https://localhost:4242/example2/exampleEndpoint               ->    exampleEndpoint.json

we want to have the following config structure:

server.root.json:
{
root: "/example2"
proxying: {
    "repos/*": "https://api.github.com/repos",
    "users/*": "https://api.github.com/users",
    "serviceBasePath": ""
}
}

GET.mock.json
{
    "active": true,
    "services": {
        "repos/exampleRepoEndpoint": {"file": "get-result.example.json"},
        "users/exampleUserEndpoint": {"file": "anotherExample.json", "active": true, "status": 417}
    }
}

[ThomasR]

We should handle the serverRoot differently: add some middleware component that normalizes the path by stripping serverRoot (e.g. return path.relative(roots.serverRoot, requestedUrl)) and pass that to our routing components in routing.js; instead of manually fumbling around with things like

if (path.normalize(requestedFile) === path.normalize(paths.staticFilesDirAbs) && req.path.replace(/\/$/, '') !== roots.serverRoot) {