Wrong course titles when language detected by ISIS is not german/english

Currently german/english is assumed when extracting the course title: titles+=$(echo "$course" | awk -vRS="</title>" '/<title>/{gsub(/.*<title>|\n+/,"");print;exit}' | sed -e s/"Kurs: "//g -e s/"Course: "//g -e s,/,_,g);

Somehow ISIS assumes Chinese on my machine which leads to course folders starting with "课程： "

Possible fix: add Accept-Language header to requests