strip comments

fixes #422
strip comments

fixes #422
Revert "strip comments"

This reverts commit 6378f10e0c43b9066bb102445a0c5b5f9fe775c7.
Revert "strip comments"

This reverts commit c98b138acf6ca75d93109f228796cfc8eb758417.
added CssUtils::filterCommentless()
removed unused limit and count args
updated cssutils method to ignore comments
Fixed partial reference name in getChildren() for partials in subfolders
refactored partialization to its own method

cleaned up same directory case
Fixed static class constanct access in closures (where no class scope is
active)
renamed var
added test coverage
Merge branch '1.1.x'
updated changelog
Fix test assertion (seems the filter now returns even more compressed CSS?)
more generic exception message
restored PathUtils for BC with 1.1-alpha
Merge branch '1.1.x'
removed PathUtils
updated changelog