Fixes; Add copy error button

JavaApp/src/main/java/net/kdt/pojavlaunch/authenticator/mojang/yggdrasil/YggdrasilAuthenticator.java

@@ -24,6 +24,7 @@ public class YggdrasilAuthenticator {
                 HttpURLConnection conn = (HttpURLConnection) url.openConnection();
                 conn.setRequestProperty("User-Agent", "Minecraft");
                 conn.setDoInput(true);
+                conn.setDoOutput(true);
                 conn.setRequestMethod("POST");
                 conn.setRequestProperty("Content-Type", "application/json");
                 conn.connect();

JavaApp/src/main/java/net/kdt/pojavlaunch/uikit/AccountJNI.java

@@ -21,7 +21,10 @@ public class AccountJNI {
         try {
             switch (type) {
                 case TYPE_SELECTACC:
-                PojavProfile.updateTokens(username);
+                    CURRENT_ACCOUNT = MinecraftAccount.load(username);
+                    if (CURRENT_ACCOUNT.accessToken.length() > 5) {
+                        PojavProfile.updateTokens(username);
+                    }
                     CURRENT_ACCOUNT = MinecraftAccount.load(username);
                     break;