improve margins for internal separator case

--enable task margins for neighbour separator
when the internal separator is hidden but there
is an applet separator at the edges and the task
is found two steps far from the edge e.g.
pos=1 or pos=tasksCount-2

plasmoid/package/contents/ui/task/TaskDelegate.qml

@@ -313,13 +313,15 @@ MouseArea{
             function updateNeighbour() {
                 //index===-1 indicates that this item is removed
                 if (latteDock && index!==-1) {
-                    hiddenSpacerLeft.neighbourSeparator = latteDock.parabolicManager.isSeparator(latteDock.latteAppletPos-1) && indexUsed===0;
+                    hiddenSpacerLeft.neighbourSeparator = latteDock.parabolicManager.isSeparator(latteDock.latteAppletPos-1)
+                            && (indexUsed===0 || (indexUsed===1 && root.internalSeparatorPos===0 && root.internalSeparatorHidden));
                 }
             }
 
             Connections{
                 target: root
                 onLatteDockChanged: hiddenSpacerLeft.updateNeighbour();
+                onInternalSeparatorHiddenChanged: hiddenSpacerLeft.updateNeighbour();
             }
 
             Connections{
@@ -389,13 +391,17 @@ MouseArea{
             function updateNeighbour() {
                 //index===-1 indicates that this item is removed
                 if (latteDock && index!==-1) {
-                    hiddenSpacerRight.neighbourSeparator = latteDock.parabolicManager.isSeparator(latteDock.latteAppletPos+1) && indexUsed===root.tasksCount-1;
+                    hiddenSpacerRight.neighbourSeparator = latteDock.parabolicManager.isSeparator(latteDock.latteAppletPos+1)
+                            && ( indexUsed===root.tasksCount-1 || (indexUsed===root.tasksCount-2 && indexUsed>=0
+                                                                   && root.internalSeparatorPos===root.tasksCount-1
+                                                                   && root.internalSeparatorHidden));;
                 }
             }
 
             Connections{
                 target: root
                 onLatteDockChanged: hiddenSpacerRight.updateNeighbour();
+                onInternalSeparatorHiddenChanged: hiddenSpacerRight.updateNeighbour();
             }
 
             Connections{