Add canvas rotation action and add it to view menu.

A bit minor of a change, but it's a frequently asked thing, and I think
this one just got lost in the MDI update.

krita/krita.rc

@@ -70,6 +70,7 @@ xsi:schemaLocation="http://www.kde.org/standards/kxmlgui/1.0  http://www.kde.org
           <Action name="zoom_to_100pct" />
           <Action name="rotate_canvas_right" />
           <Action name="rotate_canvas_left" />
+          <Action name="reset_canvas_rotation" />
           <!-- TODO: Something is not right with the way zoom actions are hooked up. These are in the KoZoomController.
                It seems they are not being properly placed in the view manager since the MDI changes were implemented
           -->

krita/kritamenu.action

@@ -605,6 +605,19 @@
       <isCheckable>false</isCheckable>
       <statusTip></statusTip>
     </Action>
+    <Action name="reset_canvas_rotation">
+      <icon></icon>
+      <text>Reset Canvas Rotation</text>
+      <whatsThis></whatsThis>
+      <toolTip>Rotate Canvas Left</toolTip>
+      <iconText>Rotate Canvas Left</iconText>
+      <activationFlags>1</activationFlags>
+      <activationConditions>0</activationConditions>
+      <shortcut></shortcut>
+      <defaultShortcut></defaultShortcut>
+      <isCheckable>false</isCheckable>
+      <statusTip></statusTip>
+    </Action>
     <Action name="view_ruler">
       <icon></icon>
       <text>Show &amp;Rulers</text>

krita/ui/KisViewManager.cpp

@@ -156,6 +156,7 @@ public:
         , openResourcesDirectory(0)
         , rotateCanvasRight(0)
         , rotateCanvasLeft(0)
+        , resetCanvasRotation(0)
         , wrapAroundAction(0)
         , levelOfDetailAction(0)
         , showRulersAction(0)
@@ -194,6 +195,7 @@ public:
     KisAction *openResourcesDirectory;
     KisAction *rotateCanvasRight;
     KisAction *rotateCanvasLeft;
+    KisAction *resetCanvasRotation;
     KisAction *wrapAroundAction;
     KisAction *levelOfDetailAction;
     KisAction *showRulersAction;
@@ -343,6 +345,7 @@ void KisViewManager::setCurrentView(KisView *view)
         d->viewConnections.addUniqueConnection(&d->nodeManager, SIGNAL(sigNodeActivated(KisNodeSP)), doc->image(), SLOT(requestStrokeEndActiveNode()));
         d->viewConnections.addUniqueConnection(d->rotateCanvasRight, SIGNAL(triggered()), canvasController, SLOT(rotateCanvasRight15()));
         d->viewConnections.addUniqueConnection(d->rotateCanvasLeft, SIGNAL(triggered()),canvasController, SLOT(rotateCanvasLeft15()));
+        d->viewConnections.addUniqueConnection(d->resetCanvasRotation, SIGNAL(triggered()),canvasController, SLOT(resetCanvasRotation()));
 
         d->viewConnections.addUniqueConnection(d->wrapAroundAction, SIGNAL(toggled(bool)), canvasController, SLOT(slotToggleWrapAroundMode(bool)));
         d->wrapAroundAction->setChecked(canvasController->wrapAroundMode());
@@ -588,6 +591,7 @@ void KisViewManager::createActions()
 
     d->rotateCanvasRight   = actionManager()->createAction("rotate_canvas_right");
     d->rotateCanvasLeft    = actionManager()->createAction("rotate_canvas_left");
+    d->resetCanvasRotation = actionManager()->createAction("reset_canvas_rotation");
     d->wrapAroundAction    = actionManager()->createAction("wrap_around_mode");
     d->levelOfDetailAction = actionManager()->createAction("level_of_detail_mode");