Chrome integration

[607011]

Follow-up to #81 (SESAM2Chrome extension):

1. Automatically generate logins for new sites from within the browser.
2. Implement heuristic to detect possible username and password fields.
3. Implement manual selection of username and password fields.

[qw3ry]

It could be a good idea to have a look at https://github.com/pfn/keepasshttp as there are already firefox and chrome extensions implementing the protocol, so it would only be necessary to implement the part attached to Qt-SESAM

[607011]

I've had a look at the code and the extension. It contains some very good ideas, but I prefer to write my own code based on my own protocols ;-)