Filesystem watch: watched directories now filters hidden files correctly (refs #1955) and transmits small changes within the event
- for upto 10 file changes detailed informations are provided (get_file_list style) - for none existing/accessable files only the name will be transmitted (and root/ext); key: subject_infos
- for upto 25 file changes only the list filenames will be transmitted (including the names of delete/moved files); key: subject_names
- for any amount of file changes the total affected file count will be transmitted; key: subject_count
- the path of the directory is provided to reconstruckt the fill path of any given file; key: path
- also removed broken and unused recursive get_file_list (via deep=True argument)