Merge pull request #2819 from Mailaender/game-start-sound

Battlecontrol initialized!
Merge pull request #2818 from Mailaender/diplomacy-renovation

Bring the Diplomacy menu back to life...
Map Editor beautification

- show full name + version of the loaded mod in titlebar
- added a help menu with useful links
- added icons to to the menu with tooltips
- added a toolbar to the editor, closes #2825