Dependencies: Clone and Build segvcatch and libbacktrace only when they are not there or new commits are available

Hot Reload: Add support for Folgo Hot Reload. Add documentation how to install and run Felgo Hot Reload

New Feature: Remote Control Pane: You can control the ControlPane from the orga. Add Sync code the the ControlItemData classes. The UI can now handle remote changes.

- Fix loading a ProgramBlock ControlItems (the loading always failed, because the id was not loaded correctly)
- Fix SegFault: If you delete a ProgramBlock, delete all ControlItems, that use the ProgramBlock

SystemVolume: Mac: when volume changed, set new volume value internally and do not use setVolume(...), because that will cause a loop (you change volume fast, 2 callbacks => first callback set volume to old volume level)

RemoteVolume: ping every 59 seconds to check if the connection is still alive (and try to prevent random disconnects).

Logging: Log time + file + line + message and not just the message. Write Qt-Logging (qDebug(), qWarning(), ...) to file and the console.

Aubio: Use aubio and not AudioFFT to generate a spectrum/frequency domain analysis. Remove AudioFFT from the Lichtsteuerung

Build: You can now build the dependencies and the Lichtsteuerung on Linux (you have to comment out the AudioFFT lib)

UX: Usermanagment: You don't have to logout and login the current user to apply the Permission changes in the UI

UX: Show popup when the loading of the settings file failed. In the Popup you can choose a other file or reload the currently selected file. This popup does not handle the case where no settings file is selected, only when the loading fails

SettingsView: Wrap the GridLayout in a ScrollView so that you can see all settings if the window is too small

Docker Image: Build qtwebsockets module, needed after commit 6a5da4c9