Description of problem:
Dialogs should catch enter key and do right things. For example should do the same like OK button.
In this case there is Initialize button and enter should do the same

How reproducible: 

Steps to Reproduce:
1. Click on Tools in menu
2. Type something
3. Hit the Enter key

Actual results:
Nothing

Expected results:
Should do the same like clicking on Initialize button

Additional info:
This bug report is part of "System Configuration Tools Cleanup Project". Don't
hesitate to ask project maintainers for any kind of help.