Separate "auto fill" and "submit" functionality

[nilsonholger]

The preference: "Try to auto fill page login forms" not only "auto fills" the login/password information, but also "submits" it to the site. It would be very nice to separate these two actions (e.g. by adding a second preference: "Auto submit") to allow one to choose whether to actually login to a site or not. Also, the "auto submit" feature might mess with sites, where additional input is needed (e.g. captchas, etc.). This feature would more closely emulate the default firefox behaviour (auto fill but do not submit).
(Similar to #10)

[jvenant]

v1-prerelease-3

[nilsonholger]

Wow, that was incredibly fast, just started looking at your code base to see if I could quickly hack it together myself. Thanks a lot, mate, much appreciated, works as expected.