[Rails-devel] More fixes around tile laying

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

I have fixed two bugs:

1517725 (reported by Bill Skulley):
Quantity of double-dot yellow tiles is not observed.

This was in fact an error in TileSet.xml: at some point
in time I had replaced the keyword "amount" by "quantity"
in this XML file, but apparently not everywhere.

1517705 (reported by Akiyoshi Nomura):
If a tile cannot be laid because of lack of money,
the tile is still shown on the screen after the error message.

Fixed by having the game engine check for valid tile laying 
in a somewhat earlier stage. This has affected the distribution 
of work between GUIHex and ORPanel.

NOTE: This check will become redundant (but not be removed!)
once we have a mechanism to select valid tile laying locations beforehand; 
this selection should take available money into account.

Erik