Make modal dialogs non-resizable

bin/Tk/FIJIModalDialog.pm

@@ -101,11 +101,20 @@ sub Populate {
         }
         $t->configure(-state => 'disabled');
     } elsif (defined $text) {
-        my $lbl = $self->add('Label', -text  => $text, -justify => 'left', )->pack(-side => 'right');
+        my $lbl = $self->add('Label',
+            -text => $text,
+            -justify => 'left',
+        )->pack(
+            -side => 'right',
+            -fill => 'both',
+            -expand => 1
+        );
         $lbl->configure(-wraplength => $wraplength) if (defined $wraplength);
     } else {
         $logger->debug("Neither text nor markuptext given for modal dialog");
     }
+
+    $self->resizable(0, 0); # Fix window's size
 }