logic: Fixed issues in search

* fixed bad search performance when rescoring
* fixed commands had no text in autocompletions
* no autocompletions when entering fulltext search query
* check query actuality before processing autocompletions

src/lib_gui/qt/view/QtSearchView.cpp

@@ -37,6 +37,11 @@ void QtSearchView::refreshView()
 	m_refreshViewFunctor();
 }
 
+std::string QtSearchView::getQuery() const
+{
+	return m_widget->query().toStdString();
+}
+
 void QtSearchView::setMatches(const std::vector<SearchMatch>& matches)
 {
 	m_setMatchesFunctor(matches);

src/lib_gui/qt/view/QtSearchView.h

@@ -19,6 +19,7 @@ public:
 	virtual void refreshView();
 
 	// SearchView implementation
+	virtual std::string getQuery() const;
 	virtual void setMatches(const std::vector<SearchMatch>& matches);
 	virtual void setFocus();
 	virtual void findFulltext();