Improvements to the CrudModel

The new data of modified rows is now stored directly within the row_mapping
also changed how new rows are handled so the new empty row for inserting
is not a special case but is part of the list.

pglab/pglab.pro

@@ -59,8 +59,8 @@ SOURCES += main.cpp\
     ConstraintModel.cpp \
     IconColumnDelegate.cpp \
     IndexModel.cpp \
-    CrudTab.cpp \
-    CrudModel.cpp \
+    crud/CrudTab.cpp \
+    crud/CrudModel.cpp \
     PgLabItemDelegate.cpp \
     Module.cpp \
     EditorGutter.cpp \
@@ -133,8 +133,8 @@ HEADERS  += \
     ConstraintModel.h \
     IconColumnDelegate.h \
     IndexModel.h \
-    CrudTab.h \
-    CrudModel.h \
+    crud/CrudTab.h \
+    crud/CrudModel.h \
     PgLabItemDelegate.h \
     Module.h \
     EditorGutter.h \
@@ -176,7 +176,7 @@ FORMS    += \
     QueryTab.ui \
     ProcessStdioWidget.ui \
     NamespaceFilterWidget.ui \
-    CrudTab.ui \
+    crud/CrudTab.ui \
     CodeGenerator.ui
 
 RESOURCES += \