Fixes #188 ("Welcome to KeeFox" form needs updating to work with new KPRPC protocol);
New user welcome form updated (no longer needs to act as a authentication mechanism and needs to be triggered in different circumstances);
Fixes #167 (Make it clear during setup process if the KeePassRPC plugin is going to be downgraded);
Links to old sourceforge manual switched to github;
a bit more error handling;
locale refactoring broke logging in that module;