Owner: catch ImportError in a less confusing, friendlier way
Owner: improve error on loading missing plugins
Owner: update error messages
s/This plugin is incompatible/This plugin may be incompatible/
Merge pull request #892 from GLolol/notify-incompatible-plugins-on-load

Owner: catch ImportError in a less confusing, friendlier way (Closes #861, Really closes #850)