- Slightly change the info text in the dialog. Add a definition of exactly what it means to "rescue" a component.
- Reload the project libraries when a project is opened, even if kicad is already running and the same project is open (to be sure the lib cache is up to date).
- Set the Modified flag on cancel, because a change has indeed been made (choosing not to rescue is equivalent to updating the components)
* Components with multiple "converts" were rendered with all of them overlapping instead
of just one.
* Schematics missing a -cache.lib resulted in unnecessary renaming suggestions.
* The dialog title "Conflicts Checking" is inaccurate now (as we're checking for more than
just conflicts) and also somewhat awkward, unidiomatic GUI English; I renamed it to
"Project Rescue Helper".