Fix viewpropertiestest when GlobalViewProps is true

The test was not saving its changes to the global settings, so it was
passing on the CI only because the default value of GlobalViewProps is
already false. If GlobalViewProps was set to true instead, testAutoSave()
would fail because save() was not called and GlobalViewProps was not

src/tests/viewpropertiestest.cpp

@@ -44,6 +44,7 @@ void ViewPropertiesTest::init()
 {
     m_globalViewProps = GeneralSettings::self()->globalViewProps();
     GeneralSettings::self()->setGlobalViewProps(false);
+    GeneralSettings::self()->save();
 
     // It is mandatory to create the test-directory inside the home-directory
     // of the user: ViewProperties does not write inside directories
@@ -58,6 +59,7 @@ void ViewPropertiesTest::cleanup()
     m_testDir = 0;
 
     GeneralSettings::self()->setGlobalViewProps(m_globalViewProps);
+    GeneralSettings::self()->save();
 }
 
 /**