Improvements to the usability of the number entry widgets (Priority, Level Emitter, Craft Amount): (#4737)

- Fixed tab order
- Introduced focus state for corner buttons
- Allowed the player to enter any text, but add validation that only persist it if it is a valid number
- Enter will now confirm these dialogs and return to the previous dialog
- The text field is automatically focused and its contents are selected

src/main/java/appeng/container/implementations/WirelessTermContainer.java

@@ -28,7 +28,6 @@ import appeng.container.ContainerLocator;
 import appeng.core.AEConfig;
 import appeng.core.localization.PlayerMessages;
 import appeng.helpers.WirelessTerminalGuiObject;
-import appeng.util.Platform;
 
 public class WirelessTermContainer extends MEPortableCellContainer {
 
@@ -57,7 +56,7 @@ public class WirelessTermContainer extends MEPortableCellContainer {
         super.detectAndSendChanges();
 
         if (!this.wirelessTerminalGUIObject.rangeCheck()) {
-            if (Platform.isServer() && this.isValidContainer()) {
+            if (isServer() && this.isValidContainer()) {
                 this.getPlayerInv().player.sendMessage(PlayerMessages.OutOfRange.get(), Util.DUMMY_UUID);
             }