[BUILD] build system fixes / cleanups

This pull request contains a bunch of smaller and bigger fixes for the OpenMS build system 

 * moved openms include file into it's scope (`src/openms` instead of `cmake`)
 * fixed link error on windows debug builds
 * fixed the `No relevant classes found` warning of moc which pops up in CDash as error
 * removed svn traces (svnversion info) from build system
 * fixed a test file collision ConvertTSVToTraML
 
Note that this commit leaves the `VersionInfo::getRevision()` on the fixed value `unknown revision`. I left inside since we need to find a way to indicate that a build is a dev or release version since currently all builds identify themselves as `1.12.0` which implies that it is a release version.