Implement shortcut keys for edit/view mode toggle.
On branch master, changes to be committed:
	modified:   mainwindow.py
Implement menu item to set synchronized scrolling off.
On branch master, changes to be committed:
	modified:   mainwindow.py
	modified:   session.json
Correct commenting.
On branch master, changes to be committed:
	modified:   mainwindow.py
Update documentation.
On branch master, changes to be committed:
	modified:   Quark_Documentation/Getting_Started.md