Sorting source and headers while at it.

Getting sloppy...

It now shows "Show" or "Hide" Status Bar depending on the current state.

New version using QtQuick along with an experimental Map Background

Also many LinkManager API changes to further isolate all link
management inside LinkManager.

Should fix things.

Moved update canvas signal to perspective load instead of hooking it to the paint event.
Added an "S" as the unit for the number of cells fact (as in 4S).

Although this should theoretically be a no-op it causes a crash in
Windows when running unit tests. Also parent toolbar in constructor.

The goal of this first installment is to organize the code a bit so it's more readable,
clean up a bit of left over cruft, and manage link configurations (and links in general).