Update JDK handling to account for AdoptOpenJDK migration to Adoptium.

Fix bug with AdmZip by replacing it for the jdk extraction task. It will have to eventually be replaced for everything else.
Remove disclaimer about Oracle JDK, as it is no longer used.

app/assets/js/scripts/landing.js

@@ -323,7 +323,7 @@ function asyncSystemScan(mcVersion, launchAfter = true){
                 // Show this information to the user.
                 setOverlayContent(
                     'No Compatible<br>Java Installation Found',
-                    'In order to join WesterosCraft, you need a 64-bit installation of Java 8. Would you like us to install a copy? By installing, you accept <a href="http://www.oracle.com/technetwork/java/javase/terms/license/index.html">Oracle\'s license agreement</a>.',
+                    'In order to join WesterosCraft, you need a 64-bit installation of Java 8. Would you like us to install a copy?',
                     'Install Java',
                     'Install Manually'
                 )