Updated gdx-teavm and added new preload screen using the java based solution instead of directly altering the index.html file

html/buildTestWeb.sh

@@ -1,5 +1,7 @@
 #!/usr/bin/env bash
 
+# ./gradlew clean html:build --refresh-dependencies --no-daemon
+
 ../gradlew :html:build
 wait
 if [[ -d ../release/webapp/ ]]; then