Added a gutter and currentline highlighting to the SQL editor.

Currently gutter only shows linenumbers. Code is mostly from http://doc.qt.io/qt-5/qtwidgets-widgets-codeeditor-example.html

There is a little bit included in this commit from a first try to make toobars adept to the current tab.

Code #2

pglab/PglPage.h

@@ -0,0 +1,24 @@
+#ifndef PGLPAGE_H
+#define PGLPAGE_H
+
+#include <QWidget>
+
+/// Provides a pluggable system for toolbar buttons and menu actions
+///
+/// We will need several kind of actions
+/// - create actions, these will create a new document or load from file , always available in menu
+/// - save actions available when on tab
+/// - edit actions
+/// - custom menu?
+///
+/// Can we use same groupings for toolbars and menu's
+/// How about additional toolbars?
+///
+class PglPage: public QWidget{
+public:
+	using QWidget::QWidget;
+
+
+};
+
+#endif // PGLPAGE_H