Fix error message when executing command in wrong mode.
Make js alert/confirm messages a bit more clear.
Make it clearer we schedule an insertmode check if hittest is null.
Log changing of statusbar color attributes.
bar: Make prompt color more important than insert color.
Remove scrolling bug (reported upstream).
Show errors during prompt/command mode.
widgets.statusbar.prompter: Use None for self.question instead of _busy.
Revert "widgets.statusbar.prompter: Use None for self.question instead of _busy."

This reverts commit 5d5f3c7f87b9c101eebe916789260bec5dd0c6a1.
Shut down correctly while being asked a question.
Better logging on exit.
Fix restarting/exceptions with URLs with spaces.