--User changes

-Add a new dialog for editing QSS stylesheets. Allow for saving, reloading and setting styles as default.
  --Include a dark style with the installation called dark.qss.
  --Also add support for themes such as Fusion.
  --Resize some controls to better fit with the new style.
 -Add an option to specify the number of random embers generated on startup. 1 is the minimum and the default.

--Bug fixes
 -Properly enable/disable thread priority label in final render dialog in response to enable/disable of the OpenCL checkbox.
 -Remove all inline stylesheets.
 -Show xaos spinners with 6 decimal places.

--Code changes
 -Remove redundant comparisons to nullptr, use ! instead;
 -Give some controls valid names instead of the auto generated ones.
 -DoubleSpinBoxTableItemDelegate.h: Add virtual keyword to overridden functions.

Source/Fractorium/FinalRenderEmberController.cpp

@@ -881,7 +881,7 @@ void FinalRenderEmberController<T>::RenderComplete(Ember<T>& ember, const EmberS
 		ember.m_Edits = m_XmlWriter.CreateNewEditdoc(&ember, nullptr, "edit", m_Settings->Nick().toStdString(), m_Settings->Url().toStdString(), m_Settings->Id().toStdString(), "", 0, 0);
 		m_XmlWriter.Save(newPath.toStdString().c_str(), ember, 0, true, false, true);//Note that the ember passed is used, rather than m_Ember because it's what was actually rendered.
 
-		if (tempEdit != nullptr)
+		if (tempEdit)
 			xmlFreeDoc(tempEdit);
 	}