Restore some Q_OBJECT macros (#516)

Reverts commit 08dfcc, and restores part of the changes.

This resolves #516 (closed).

GUI/View/Plot2D/ColorMapCanvas.h

@@ -23,8 +23,8 @@ class IntensityDataItem;
 class PlotStatusLabel;
 class QCustomPlot;
 
-//! Contains ColorMap for intensity data presentation, and provide control
-//! of font size, status string appearance
+//! Contains ColorMap for intensity data presentation, and provides control of font size.
+//! Controls appearance of the status string.
 
 class ColorMapCanvas : public QWidget {
 public: