[Patch draft] Annotations for remote control implementation

[simon04]

I was playing around a bit with annotations. The goal would be to make implementing new remote control handlers more fun. A handler is an arbitrary method annotated with @RequestMethod and its parameters annotated with @RequestParameter. The load_object could look like:

@RequestMethod(
        command = "load_object",
        usage = "Download objects with given id.",
        usageExamples = {"/load_object?new_layer=true&objects=w106159509",
                "/load_object?new_layer=true&objects=r2263653&relation_members=true"
        })
public static void loadObject(
                          @RequestParameter(name = "objects") String objects,
                          @RequestParameter(name="new_layer", optional = false) String new_layer,
                          @RequestParameter(name="relation_members", optional = false) String relation_members) {
// implementation follows
}

A working, but unfinished patch is attached.

[Don-vip]

Is the duplication of parameter name really necessary ? If we could simply use the function's parameter name, it would be simpler, no ?

I let you decide the milestone :)