Set parent for options dialog where appropriate.

Otherwise the options dialog might appear behind the current "dialog"
(for example the "new" wizards).
Also, take ICore::dialogParent as default.

Change-Id: I4578e269db5763842a942549a45ec8cdd6b28b5d
Reviewed-by: Daniel Teske <daniel.teske@digia.com>

src/plugins/android/androidpotentialkit.cpp

@@ -120,7 +120,8 @@ AndroidPotentialKitWidget::AndroidPotentialKitWidget(QWidget *parent)
 void AndroidPotentialKitWidget::openOptions()
 {
     Core::ICore::showOptionsDialog(Constants::ANDROID_SETTINGS_CATEGORY,
-                                   Constants::ANDROID_SETTINGS_ID);
+                                   Constants::ANDROID_SETTINGS_ID,
+                                   this);
 }
 
 void AndroidPotentialKitWidget::recheck()