Always trim the package description string.

(transplanted from orange3@cd94dfb502f39933d838f0b600aae1374f8312c1)
Show an message informing the user he/she needs to restart the application.

(transplanted from orange3@d3370ff10d07f371a3df597d71e22b12225d4f53)
Display the actions which will take place.

(transplanted from orange3@99837b14ffa64f0f53b403ad3607b95d1f67f70c)