Great.
Sure did. I have made cheaper web application with more functionality. So sorry about my fellow countrymen, I guess you are Swedish too. At least it says swedish in the sourcecode.
Sorry about that, I had it all wrong too. _remap are a hidden function that can't be trigged in the URL: localhost/administrator/_remap/login/ so some other function or class need to call it. But the problem is that that function want's to trigger login by passing it an argument _remap('login'). If you search in all your project files after _remap you sure will find it.
Don't manually scan thought, use an editor for that. (Notepad++ for Windows)
Post the login function inside your administrator_model.
See above.
It depends on what encryption are being used. Can't tell you that one yet. Need the model.
Dunno, can't tell you without the code.