ui: expand icon tabs

res/layout/activity_sflphone_home.xml

@@ -60,6 +60,7 @@ as that of the covered work.
                 android:layout_alignParentTop="true"
                 android:layout_marginTop="?android:attr/actionBarSize"
                 android:background="@color/sfl_blue_0"
+                app:shouldExpand="true"
                 app:indicatorColor="@color/sfl_light_blue"
                 app:underlineColor="@color/sfl_light_blue" />
 
@@ -69,24 +70,15 @@ as that of the covered work.
                 android:layout_height="match_parent"
                 android:layout_below="@+id/pts_main"
                 android:paddingBottom="@dimen/contact_drawer_handle_height" />
-
-            <ImageView
-                android:id="@+id/overall_shadow"
-                android:layout_width="match_parent"
-                android:layout_height="match_parent"
-                android:alpha="0"
-                android:background="@color/black"
-                android:clickable="false"
-                android:focusable="false" />
         </RelativeLayout>
 
         <FrameLayout
             android:id="@+id/contacts_frame"
             android:layout_width="match_parent"
             android:layout_height="match_parent"
-            android:focusableInTouchMode="true"
+            android:clickable="true"
             android:focusable="true"
-            android:clickable="true" />
+            android:focusableInTouchMode="true" />
     </org.sflphone.views.SlidingUpPanelLayout>
 
     <FrameLayout