logic: error limit and better user experience (issue #385)

* only show up to 1000 errors in table and code view
* click button in bottom right of error table to show all
* same error order in code and table
* highlight error line when switching reference in code view
* improved error view performance

bug id = 385

src/lib_gui/qt/view/QtStatusView.cpp

@@ -74,7 +74,7 @@ void QtStatusView::initView()
 	);
 
 	filters->addWidget(clearButton);
-	filters->addSpacing(15);
+	filters->addSpacing(10);
 
 	layout->addLayout(filters);
 
@@ -153,6 +153,11 @@ void QtStatusView::doAddStatus(const std::vector<Status>& status)
 	}
 
 	m_table->updateRows();
+
+	if (!m_table->hasSelection())
+	{
+		m_table->showLastRow();
+	}
 }
 
 void QtStatusView::setStyleSheet() const