Improved a bit the level description and titles.

I also added the missing word wrapping property in the map description control.

Fixes #172
Made the first treasury tile cost nothing.

This handled that way in the server, and the game mode text overlay shows a price of 0
for the first tile in that case.

I also made it so the text overlay is now colored in red when the player hasn't got enough
gold to build a room or a trap.

Fixes #87
Added the Training Dummy 4 model + fixed licenses
Added the new light indicator and fixed how light indicators are handled.

You can see one in the skirmish oldTest map.

Fixes #168
Fixed the chance rate to see the training Dummy 4

You would see it less likely because of an offset by one mistake.

Thanks to @hwoarangmy for pointing out.
Added the new Forge tile and Anvil object, prepared by Danimal. :)

I'll remove the old forge material and texture when all the forge objects will be replaced.

Fixes #183
Fixed the horizontal scrollbar left/right buttons visuals.
Made the game version be set within the cmake configuration only.
Removed dependency on dirent, using boost instead.
Merge pull request #182 from Bertram25/development

Fix for #87, #168, #172 and #183
Merge branch 'development' of github.com:OpenDungeons/OpenDungeons into development
Merge pull request #186 from oyvindln/development

removed dirent
Made the resource manager retrieve the OD installation path at load time.

I also made it so the ./resources.cfg file is tested first to override the data path to "./",
to still permit developer builds.

Needs testing though to make sure.

Should help with #58