Filters the toolbarButtons in redux depending on the visitor state instead of filtering them every time in mapStateToProps. This will prevent unnecessary rerenders of the toolbar.
Additionally:
- Moves visitor buttons const from features/config in features/toolbox.
- Removes dublicate functions isButtonEnabled and isToolbarButtonEnabled.
- Adds more buttons to the visitor allowed buttons which functionality has been any way accessible trough shortcuts or somewhere else.
- Enables customButtons to be visible for visitors.