Added list of constraints to the tables page.

Last column shows the full textual definition until I have decided on
a better way to visualize the details.

pglab/pglab.pro

@@ -62,7 +62,10 @@ SOURCES += main.cpp\
     TablesTableModel.cpp \
     ColumnTableModel.cpp \
     NamespaceFilterWidget.cpp \
-    NamespaceItemModel.cpp
+    NamespaceItemModel.cpp \
+    ApplicationWindow.cpp \
+    ConstraintModel.cpp \
+    IconColumnDelegate.cpp
 
 HEADERS  += \
     QueryResultModel.h \
@@ -96,7 +99,10 @@ HEADERS  += \
     TablesTableModel.h \
     ColumnTableModel.h \
     NamespaceFilterWidget.h \
-    NamespaceItemModel.h
+    NamespaceItemModel.h \
+    ApplicationWindow.h \
+    ConstraintModel.h \
+    IconColumnDelegate.h
 
 FORMS    += mainwindow.ui \
 	ConnectionManagerWindow.ui \
@@ -107,7 +113,8 @@ FORMS    += mainwindow.ui \
     ServerWindow.ui \
     ProcessStdioWidget.ui \
     TablesPage.ui \
-    NamespaceFilterWidget.ui
+    NamespaceFilterWidget.ui \
+    ApplicationWindow.ui
 
 RESOURCES += \
     resources.qrc