Collection of small fixes and improvements

- Selections stay clearly visible when focus changes to other widget
- Autoresize columns
- Table properties view now correctly allows selection in both columns and draws selection correctly
- Tables can be sorted again and now by any column

pglab/widgets/CatalogFunctionsPage.cpp

@@ -57,6 +57,7 @@ void CatalogFunctionsPage::setCatalog(std::shared_ptr<const PgDatabaseCatalog> c
 {
 	m_catalog = cat;
 	m_model->setCatalog(cat);
+	m_functionTable->resizeColumnsToContents();
 }
 
 void CatalogFunctionsPage::functionTable_currentRowChanged(const QModelIndex &current, const QModelIndex &previous)