Tablet Running Scripts dialog fixes

* The "Currrently Running" section is now visible by default, this includes the "Reload All" and "Remove All" buttons
* The entire dialog is flickable/scrollable.  We need to do this because the entire dialog is too tall to fit on the tablet.
* The keyboard now appears when the filter edit text has focus.
  The content is scrolled in such away that the focus edit field, and the tree view are above the keyboard.

interface/resources/qml/hifi/dialogs/TabletRunningScripts.qml

@@ -79,9 +79,19 @@ Rectangle {
         scripts.stopAllScripts();
     }
 
+    Flickable {
+        id: flickable
+        width: parent.width
+        height: parent.height - (keyboard.raised ? keyboard.raisedHeight : 0)
+        contentWidth: parent.width
+        contentHeight: column.childrenRect.height
+        clip: true
+
         Column {
+            id: column
             width: parent.width
             HifiControls.TabletContentSection {
+                id: firstSection
                 name: "Currently Running"
                 isFirst: true
 
@@ -262,6 +272,15 @@ Rectangle {
                     placeholderText: "Filter"
                     onTextChanged: scriptsModel.filterRegExp = new RegExp("^.*" + text + ".*$", "i")
                     Component.onCompleted: scriptsModel.filterRegExp = new RegExp("^.*$", "i")
+                    onActiveFocusChanged: {
+                        // raise the keyboard
+                        keyboard.raised = activeFocus;
+
+                        // scroll to the bottom of the content area.
+                        if (activeFocus) {
+                            flickable.contentY = (flickable.contentHeight - flickable.height);
+                        }
+                    }
                 }
 
                 HifiControls.VerticalSpacer {
@@ -343,3 +362,15 @@ Rectangle {
         }
     }
 
+    HifiControls.Keyboard {
+        id: keyboard
+        raised: false
+        numeric: false
+        anchors {
+            bottom: parent.bottom
+            left: parent.left
+            right: parent.right
+        }
+    }
+}
+

interface/resources/qml/hifi/tablet/TabletMenuStack.qml

@@ -54,6 +54,10 @@ Item {
             d.currentItem.focus = true;
             d.currentItem.forceActiveFocus();
             breadcrumbText.text = d.currentItem.title;
+            if (typeof bgNavBar !== "undefined") {
+                d.currentItem.y = bgNavBar.height;
+                d.currentItem.height -= bgNavBar.height;
+            }
         }
 
         function popSource() {