Add support for normalizing UNC paths in the FileSystem, controlled by the FileSystemImpl.normalizeUNCPaths flag
Rename the duplicated-slash regular expression and add JSDoc
Assume the FileSystem is initialized within `_normalizePath`; initialize the singleton instance at module load
Merge pull request #6041 from adobe/iwehrman/normalize-UNC-paths

Correctly normalize UNC paths
Monkeypatch: in CodeMirror, revert less.js to a working version
Merge pull request #6058 from adobe/post-sprint-34-hotfix

Monkeypatch: in CodeMirror, revert less.js to a working version
Filter out dotfiles
Replace the directory dot-file exclusion test; move the language test within isFileExcluded for wider coverage
make isExcludedFiles work right when the preferences do not specify any exclusions
Merge pull request #6068 from adobe/dangoor/6067-reading-all-files

Filter out dotfiles in code hints