added and commented some lines to enable cross-origin requests for HCI

prototype

src/main/kotlin/de/dzptm/server/Server.kt

 package de.dzptm.server
 
+import spark.kotlin.before
+import spark.kotlin.options
 import spark.kotlin.port
 
 var pythonPort: String = ""
@@ -15,6 +17,27 @@ fun main(args: Array<String>) {
         println("No valid port given... defaulting to 8080.")
     }
     pythonPort = if (args.size >= 2) args[1] else "9998"
+
+    // for HCI guys testing only
+//    options(
+//        "/*"
+//    ) {
+//        val accessControlRequestHeaders: String = request
+//            .headers("Access-Control-Request-Headers")
+//        response.header(
+//            "Access-Control-Allow-Headers",
+//            accessControlRequestHeaders
+//        )
+//        val accessControlRequestMethod: String = request
+//            .headers("Access-Control-Request-Method")
+//        response.header(
+//            "Access-Control-Allow-Methods",
+//            accessControlRequestMethod
+//        )
+//        "OK"
+//    }
+
+    before { response.header("Access-Control-Allow-Origin", "*") }
     Routes.register()
 
 }
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