Exclude folder pattern

[simoncn]

The excludePattern setting allows the user to prevent files and folders being included in the Minimserver library. It doesn't prevent these files and folders being read by the Java file tree walker.

When the Java file tree walker encounters an error reading a file or folder, it reports this error to MinimServer. There are number of possible errors that can be reported in this way. This happens before any excludePattern processing is done on the file or folder.

In this error case, it would be possible for MinimServer to try to filter these warning notifications based on some combination of excludePattern checking and looking at the type of error reported. The latter would be difficult because of the large number of different errors that can be reported by the Java file tree walker. My view is that attempting to do this filtering is undesirable because it could cause a significant problem to not be reported to the user when it should have been.