- minor optimizations
- fixed incorrect error reporting in launcher
- set WoG version to "0.0.0" so full version will be installed from repo
in future
- updated debian required packages list
- launcher will be enabled by default


git-svn-id: http://svn.code.sf.net/p/vcmi/code/trunk/@3617 4dfc6b2a-8b31-0410-aa91-d6c70e3ac834