Windows v6 beta test

[Admins]

A new version 6.009 has been uploaded, install it on the login server:

- Resets the recently added configuration variables on server-switch now (for projectiles and npc-on-npc hits)
- Selection in GuiTextEditCtrl is lifted when updating the text by script
- Enabled the new level (map) format for testing & debugging purposes
- Added buttons in the options for opening the screenshot folder and video folder (when you have made some) because it's hard to find them via Windows Explorer
- Saving screenshots via Alt+2 is not messing up the graphics anymore, makes it possible to change window mode and size afterwards