open wordlists browser even without Storage permission

and add a na-key to rationale for storage permissions so don't
ask forever when user wants to decline.

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

@@ -524,8 +524,9 @@ public class DictsDelegate extends ListDelegateBase
         makeNotAgainBuilder( R.string.not_again_dicts, R.string.key_na_dicts )
             .show();
 
-        tryGetPerms( Perm.STORAGE, R.string.dicts_storage_rationale,
-                     Action.STORAGE_CONFIRMED );
+        Perms23.tryGetPermsNA( this, Perm.STORAGE, R.string.dicts_storage_rationale,
+                               R.string.key_na_perms_storage_dicts,
+                               Action.STORAGE_CONFIRMED );
     } // init
 
     @Override
@@ -944,6 +945,20 @@ public class DictsDelegate extends ListDelegateBase
         return handled;
     }
 
+    @Override
+    public boolean onNegButton( Action action, Object[] params )
+    {
+        boolean handled = true;
+        switch ( action ) {
+        case STORAGE_CONFIRMED:
+            mkListAdapter();
+            break;
+        default:
+            handled = super.onNegButton( action, params );
+        }
+        return handled;
+    }
+
     private DictLoc itemToRealLoc( int item )
     {
         item += DictLoc.INTERNAL.ordinal();

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

@@ -154,6 +154,7 @@
   <string name="key_na_sms_banned">key_na_sms_banned</string>
   <string name="key_na_longtap_lookup">key_na_longtap_lookup</string>
   <string name="key_na_perms_phonestate">key_na_perms_phonestate</string>
+  <string name="key_na_perms_storage_dicts">key_na_perms_storage_dicts</string>
   <string name="key_na_newFeatureFilter">key_na_newFeatureFilter</string>
 
   <string name="key_na_dupstatus_host">key_na_dupstatus_host</string>

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

@@ -2426,9 +2426,9 @@
     still be able to receive invitations if you don’t grant this
     permission, but only the phone number of the sender will be
     displayed.
-  </string>
+    </string>
     <string name="move_dict_rationale">Storing a wordlist in the
-  Downloads area requires permission.</string>
+    Downloads area requires Storage permission.</string>
     <string name="remove_sms">Remove SMS</string>
     <!-- In the permissions rationale explanation, means go ahead and
        have the OS ask for permission -->