kill progress when owner view goes away

BT Invite progress was sticking around when Board left because it wasn't
foreground.

xwords4/android/app/src/main/java/org/eehouse/android/xw4/DelegateBase.java

@@ -159,6 +159,7 @@ public class DelegateBase implements DlgClickNotify,
     {
         m_isVisible = false;
         XWServiceHelper.setListener( null );
+        m_dlgDelegate.onPausing();
     }
 
     protected DelegateBase curThis()

xwords4/android/app/src/main/java/org/eehouse/android/xw4/DlgDelegate.java

@@ -326,6 +326,11 @@ public class DlgDelegate {
         m_handler = new Handler();
     }
 
+    void onPausing()
+    {
+        stopProgress();
+    }
+
     private void showOKOnlyDialogThen( String msg, Action action,
                                        Object[] params, int titleId )
     {

xwords4/android/app/src/main/java/org/eehouse/android/xw4/InviteDelegate.java

@@ -171,13 +171,7 @@ abstract class InviteDelegate extends ListDelegateBase
         }
     }
 
-    protected void onBarButtonClicked( int id )
+    abstract void onBarButtonClicked( int id );
-    {
-        Assert.fail();          // subclass must implement
-    }
-
-    // Subclasses can do something here
-    protected void addToButtonBar( FrameLayout container ) {}
 
     ////////////////////////////////////////
     // View.OnClickListener

xwords4/android/app/src/main/java/org/eehouse/android/xw4/WiDirInviteDelegate.java

@@ -77,6 +77,12 @@ public class WiDirInviteDelegate extends InviteDelegate
         WiDirService.unregisterDevSetListener( this );
     }
 
+    protected void onBarButtonClicked( int id )
+    {
+        // not implemented yet as there's no bar button
+        Assert.assertFalse( BuildConfig.DEBUG );
+    }
+
     @Override
     protected void onChildAdded( View child, InviterItem data )
     {

xwords4/android/app/src/main/res/values/strings.xml

@@ -1835,7 +1835,7 @@
     <string name="button_scan">Rescan</string>
 
       <!--  -->
-    <string name="invite_progress_title">Connecting...</string>
+    <string name="invite_progress_title">Connecting…</string>
     <string name="invite_progress_fmt">Sending invitation to CrossWords on %1$s</string>
       <!--  -->
     <string name="summary_wait_host">Waiting for connection[s]</string>