Visuals

I have adapted the patch from issue 724 by alexghir9 following the
suggestion from Edvin
Visuals updated

Made some changes following suggestions from AlbertFree
Thanks
Comment updated

As per suggestion from Albet
Visuals

allows #visuals_available  gbv.HoldVisual gbv.HoldVisualPeepCount to be
used by the game to determine if and when a visual disease can appear
in-game
Updates and fixes to czech.lua
Tooltips for decrease / increase buttons in the research policy dialog
Billy Savile (VIP)

This replaces one VIP and is only relevant to the English Language,
unless he also appears in other languages!
added indent and removed spare line
Refactored the code and added some comments
Issue #50

I was not able to replicate the same error after this small change
Update french.lua

Fix typography rules.
Update CMakeLists.txt for moved LICENSE.txt in the parent directory

Reported on https://code.google.com/p/corsix-th/issues/detail?id=1704&start=100
Better to provide a patch here. :-)
Bug still available.
Update french.lua

fix missing unit for money and add # for IRC channel
Update czech.lua
Fix indentation
Merge pull request #57 from Tsbook/master

Update czech.lua, thank you for your help. :-)
Move deletion of Lua files in Windows Installer
Preserves Lua directories in the x86 and x64 folder so that extra
lua files can be included in the installer. In particular this is
for lua-socket.
Reformatted the comment to conform the wiki guideline
Give it an .txt extension
Also give the README file an .txt extension