* standard paths for applications
* support for Qt::DecorationRole
* QMap<QString, QPixmap> m_availableActions
* Constructor for icon only
* only leafs support actions
When the component was constructed, the table view with configured
hotkeys was empty even if hotkeys were configured.
This commit reloads the configured settings during component construction
and populates the table.
* move hotkey settings in own GUI component -> easier adjustments
* some fixes for dock widgets when tab widget is shown without names (unrelated but found + fixed in same step)