Configurable Hotkeys (Problem: multiple assigned hotkeys)
Alt+Left Arrow is default to go back in Chrome and Firefox.
As Alt + Left Arrow is also assigned the layout function "align to left edge" I have to manually right-click and select the function, if I do not want to leave the slide I am currently editing, because both actions get executed.
Solution 1 (general solution)
Make them configurable in some options place
Solution 2 (quick & easy)
Assign a second place that does not clash with a default browser hotkey
Solution 3 (not nice but works)
remove the default EventHandler of the action so the browser-action is not executed