Refactoring: move undo commands to top level

In the future we might want to use undo-commands for mobile as
well (even if not implementing undo).

Therefore, move the undo-command source from desktop-widgets
to their own commands top-level folder.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>

desktop-widgets/tab-widgets/TabDiveEquipment.cpp

@@ -4,7 +4,7 @@
 #include "desktop-widgets/mainwindow.h" // TODO: Only used temporarilly for edit mode changes
 #include "desktop-widgets/simplewidgets.h" // For isGnome3Session()
 #include "desktop-widgets/modeldelegates.h"
-#include "desktop-widgets/command.h"
+#include "commands/command.h"
 #include "profile-widget/profilewidget2.h"
 
 #include "qt-models/cylindermodel.h"

desktop-widgets/tab-widgets/TabDiveInformation.cpp

@@ -4,9 +4,9 @@
 #include "desktop-widgets/mainwindow.h" // TODO: Only used temporarilly for edit mode changes
 #include "profile-widget/profilewidget2.h"
 #include "../tagwidget.h"
+#include "commands/command.h"
 #include "core/units.h"
 #include "core/dive.h"
-#include "desktop-widgets/command.h"
 #include "core/qthelper.h"
 #include "core/statistics.h"
 #include "core/display.h"

desktop-widgets/tab-widgets/TabDiveSite.cpp

@@ -4,7 +4,7 @@
 #include "core/divesite.h"
 #include "qt-models/divelocationmodel.h"
 #include "qt-models/filtermodels.h"
-#include "desktop-widgets/command.h"
+#include "commands/command.h"
 
 #include <qt-models/divecomputerextradatamodel.h>
 

desktop-widgets/tab-widgets/maintab.cpp

@@ -24,8 +24,8 @@
 #include "core/subsurface-string.h"
 #include "core/gettextfromc.h"
 #include "desktop-widgets/locationinformation.h"
-#include "desktop-widgets/command.h"
 #include "desktop-widgets/simplewidgets.h"
+#include "commands/command.h"
 
 #include "TabDiveEquipment.h"
 #include "TabDiveExtraInfo.h"