Added base classes for plugin UI.

core/iform.h

@@ -0,0 +1,23 @@
+#ifndef IFORM_H
+#define IFORM_H
+
+#include <QWidget>
+
+class IForm : public QWidget
+{
+    Q_OBJECT
+
+public:
+    explicit IForm(QWidget *parent = 0);
+    virtual ~IForm();
+
+signals:
+    void recordAdded();
+    void recordUpdated();
+    void validationError(QString errMessage);
+
+public slots:
+    virtual bool saveRecord() = 0;
+};
+
+#endif // IFORM_H