Convert paths to generic form after 341aa766d8c7af1923b7122a731ca0b2a809cbae

Might not have caught all places where this should be done.
Merge pull request #97 from HorstBaerbel/master

Convert paths to generic form
Update project description regarding issues
Merge pull request #100 from HorstBaerbel/master

Update project description mentioning what to do in case of problems
Merge branch 'master' into unstable
Moved to class-individualized static gets for resources.
See issue #95 for discussion.
Initialize mOpacity.