Fossil: Consolidate optionpage/apply further

Change-Id: I345c6f38421864630d99a45fd2176ba0836536e9
Reviewed-by: Orgad Shaneh <orgads@gmail.com>

src/plugins/fossil/fossilplugin.cpp

@@ -190,7 +190,7 @@ public:
     FossilSettings m_fossilSettings;
     FossilClient m_client{&m_fossilSettings};
 
-    OptionsPage optionPage{[this] { configurationChanged(); }, &m_fossilSettings};
+    OptionsPage optionPage{&m_fossilSettings};
 
     VcsSubmitEditorFactory submitEditorFactory {
         submitEditorParameters,
@@ -300,6 +300,9 @@ FossilPluginPrivate::FossilPluginPrivate()
         return new FossilJsExtension(&m_fossilSettings);
     });
 
+    connect(&m_fossilSettings, &AspectContainer::changed,
+            this, &IVersionControl::configurationChanged);
+
     createMenu(context);
 }