Fix windowed mode setting got reset every start

Fixes issue #42
Refactor UIDownloader and UIUpdateNotifier into core
Add control panel and start menu entries on install
Add updater class to installer
Add Javascript and backend for MOHW
Add MOHW client fixes #44
Update readme
Fix mohw build
Add icons to MOHW and BFH
Merge branch '2.1-mohw'
Resolve conflict in Readme.md from 2.1-mohw/master
Merge branch 'master' of https://github.com/ron975/Battlelogium

Conflicts:
	README.md