Fixed abgabe task for UNIX like systems

build.gradle

@@ -23,9 +23,7 @@ test {
 task abgabe(type: Zip) {
     if(project.hasProperty("n")) {
         includeEmptyDirs = false
-        from("/") {
+        from(".")
-            into("/")
-        }
         from("src/main/") {
             into("src/main")
         }