[Rails-devel] Fixes, M&H/NYC swap

[Erik V. <eri...@hc...>]

In addition to a few more bug fixes, I have corrected
the 1830 M&H/NYC swap so that it is now Undo/Redo/Save/Loadable.

The old code assumed, that this swap was only allowed from the green phase.
I checked the rules again and found nothing supporting that restriction,
so I have now made this swap possible in the yellow phase too.

The UI for this swap has changed according to the result of a discussion
that we have had long ago. The M&H button has been removed.
The Status window now has a new menu item "Special", that is normally greyed
out.
If, during a Stock Round, the player having the turn owns the M&H, 
the Special menu is activated and gets a menu item added to execute the
swap. 
To even more highlight the fact that a special action is possible, 
the background of the "Special" menu turns orange, in line
with the colour code for activated screen fields.

I'm not sure if this Special menu can and should also appear 
in the OR window for tile and token laying. It would 
certainly help notifying the current player that a special action
is possible, although the red prompt text also does that pretty well IMO.

There is more to say about the M&H, but I will do that in a separate post.

Erik.