Fix Goto app clicks not working

Includes better card highlighting fix.

interface/resources/qml/hifi/Card.qml

@@ -49,7 +49,6 @@ Item {
     property string defaultThumbnail: Qt.resolvedUrl("../../images/default-domain.gif");
     property int shadowHeight: 10;
     property bool hovered: false
-    property bool scrolling: false
 
     HifiConstants { id: hifi }
 
@@ -238,7 +237,7 @@ Item {
     property var unhoverThunk: function () { };
     Rectangle {
         anchors.fill: parent
-        visible: root.hovered && !root.scrolling
+        visible: root.hovered
         color: "transparent"
         border.width: 4
         border.color: hifiStyleConstants.colors.primaryHighlight
@@ -252,17 +251,17 @@ Item {
             goFunction("hifi://" + hifiUrl);
         }
         hoverEnabled: true;
-        onEntered:  {
-            Tablet.playSound(TabletEnums.ButtonHover);
-            hoverThunk();
+        onContainsMouseChanged: {
+            // Use onContainsMouseChanged rather than onEntered and onExited because the latter aren't always
+            // triggered correctly - e.g., if drag rightwards from right hand side of a card to the next card
+            // onExited doesn't fire, in which case can end up with two cards highlighted.
+            if (containsMouse) {
+                Tablet.playSound(TabletEnums.ButtonHover);
+                hoverThunk();
+            } else {
+                unhoverThunk();
+            }
         }
-        onExited: unhoverThunk();
-        onCanceled: unhoverThunk();
-    }
-    MouseArea {
-        // This second mouse area causes onEntered to fire on the first if you scroll just a little and the cursor stays on
-        // the original card. I.e., the original card is re-highlighted if the cursor is on it after scrolling finishes.
-        anchors.fill: parent
     }
     StateImage {
         id: actionIcon;

interface/resources/qml/hifi/Feed.qml

@@ -141,7 +141,6 @@ Column {
             textSizeSmall: root.textSizeSmall;
             stackShadowNarrowing: root.stackShadowNarrowing;
             shadowHeight: root.stackedCardShadowHeight;
-            scrolling: scroll.moving
 
             hoverThunk: function () { 
                 hovered = true;