Show locator filter descriptions more prominently

- Sort items in the menu.
- Disable items for disabled filters.
- Show a tool tip when hovering over the magnifying glass menu.
- Add descriptions to all filters and make them more consistent.

Change-Id: Ic03e303c50422f9de5dd3c512fe32bbdc958d2ba
Reviewed-by: David Schulz <david.schulz@qt.io>
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>

src/plugins/fossil/fossilplugin.cpp

@@ -293,6 +293,7 @@ FossilPluginPrivate::FossilPluginPrivate()
     connect(&m_client, &VcsBase::VcsBaseClient::changed, this, &FossilPluginPrivate::changed);
 
     m_commandLocator = new Core::CommandLocator("Fossil", "fossil", "fossil", this);
+    m_commandLocator->setDescription(Tr::tr("Triggers a Fossil version control operation."));
 
     ProjectExplorer::JsonWizardFactory::addWizardPath(Utils::FilePath::fromString(Constants::WIZARD_PATH));
     Core::JsExpander::registerGlobalObject("Fossil", [this] {