Fixes: Introduce a cpp settingspage containing file naming conventions (lower case and suffixes). Reorder VCS settings pages.

Task: 241959, 248085

RevBy: Optics/Naming checked by con
Details: Give IOptionPage an id() to differentiate from trName(). Make showOptionsDialog return a bool (applied) and give it an optional parent. Change Cpp and form class wizards, give them a Configure... button to change those settings.

src/plugins/designer/settingspage.cpp

@@ -43,7 +43,12 @@ SettingsPage::~SettingsPage()
 {
 }
 
-QString SettingsPage::name() const
+QString SettingsPage::id() const
+{
+    return m_designerPage->name();
+}
+
+QString SettingsPage::trName() const
 {
     return m_designerPage->name();
 }