GitLab

filewatch: before starting a new watch, call "unwatch" with same parameter set (reduces the occurrences in which file removal/renaming of opened files is not detected)

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)

        - extend error message if a file cannot be read

- check permissions when drag and drop
- hide edit tools on touch devices

also implemented remote side event buffering refs #1955, #1952

workspace.ini reader: avoid polling by implementing a workspace-global watch emitting a message on changes or deletion/renaming

 Also retrieve a merge workspace.ini (global & user specific) as requested in ref #1914

Integrated bookmark bar. Global getter from public and private workspace.ini and setter to private workspace.ini

 Implement inline watch for get_file/save_file.
 Replace the codeeditors implementation for file change watching with the global one.
 TODO: renameing a file does not trigger the desired events (needs fix in fsmonitor)

 Includes inline-watch upon filecount/filelist if a watch_id is given.
 The watch handels are identified by window_id, view_id (both set automatically) and watch_id of choice.
 Upon changes a "watch" message will be send via bus containing further details (action, watched path, watch_id).
 Also prevent multiple filelist updates from running simultaneously and improve overall update triggering.

 fix inefficent communication between server and workspace during filelisting for preview purpose
 enable multiple instances of codeeditor executing code simultanious
 transmit execution information (start, output, end) via bus instead of poll
 output shows up immediately
 codeeditor will immediatly be notified about external changes (modify,delete,move) by bus instead of polling
 previewtab will immediatly be notified about changes in the currently displayed folder by bus instead of polling
 some small changes