- fixes crash on giving banned skills to hero (partial #1427)
- fixes hover text for prisons - they should not display name of imprisoned hero
- missing bits for launcher, Linux-specific

git-svn-id: http://svn.code.sf.net/p/vcmi/code/trunk/@3530 4dfc6b2a-8b31-0410-aa91-d6c70e3ac834