Add undo and redo buttons

[pdawyndt]

The undo and redo functionality could remain hidden for the target audience if not represented by buttons. Loss of information could be very frustrating, especially after hitting some unintentional sequence of key strokes.

Other functionality whose shortkeys may not be known for the target audience:

• select all
• cut
• copy
• paste
• search
• replace
• replace all
• comment
• uncomment

[winniederidder]

Many actions are indeed supported by th CodeMirror editor. Since the list is quite extensive, proper care needs to be taken to visualise these features. Perhaps using the context-menu (i.e. right-clicking) works best?

[winniederidder]

Right clicking the editor already shows some of these actions (e.g. undo, copy, ...). If there ever is need for a full-fledged toolbar in Papyros, some of these buttons could be put there.