attempt at continuing with errors

I really don't like the fact that we have to continue all the
way through when there's an error, just to make the wait dialog
go away.

But here's one of a thousand cases, a bad load.
remove funny looking variable name
comment
remove extra initialization of show-source checkbox

fixes #218
remove unused font awesome checkbox

ui_utils.checkbox_menu_item has the same functionality plus a setter
artifacts