* Converted all instances of "256" spotted to use RegionSize instead. Some approximations used for border crossings (ie 255.9f) are still using that value, but should be updated to use something based on RegionSize.
* Moving Terrain to a RegionModule, implemented ITerrainChannel and TerrainModule - nonfunctional, but will be soon.
* Added the web_login_key to the users table
* Added happy configurable http error message pages
* This update is large enough to have 'awe' value.. so backup your users or weep.
* Not tested on MSSQL, even though I added code to update the tables!