renamed imported css files to _* and splitted error.cs back to own file

...ache/b863b6aa466a488d46195922207da5ecfd250f57/error.scssc

...ache/b863b6aa466a488d46195922207da5ecfd250f57/style.scssc

public/404.php

public/internal/500.php

scss/_fork-awesome.min.scss

scss/_general.scss

scss/_menue.scss

scss/_normalize.scss

scss/_ntp.scss

scss/_prism.scss

scss/_sourcesanspro.scss

scss/error.scss

scss/style.scss