Whitelisting sites

[cinke]

New Issue Checklist (tick off like this: [x])

• I checked existing issues (open and closed) for possible duplicates
• I can reproduce the problem on the latest stable version (not nightly!)

What is your browser?

• Firefox
• Chrome

What is your operating system?

• Linux
• Mac
• Windows

Description (please include examples/screenshots where applicable)

Feature request
On some sites I would prefer not using SFF, and manually enter data. Even in login forms appear suggestions.
White-listing these sites would solve these problems.

[sblask]

I am not very interested in this and have no time to do it, but if someone wants to pick this up, I wouldn't mind integrating it.