Fixed the inconsistent images for sidenav type fixed variations.

Author: kevzlou7979

src/main/java/gwt/material/design/demo/client/application/components/sidenavs/SideNavsView.ui.xml

@@ -79,7 +79,7 @@
             <!-- FIXED type Variations -->
             <m:MaterialTitle title="Fixed Type Variations" description="Fixed type can be displayed floating or clip. We let users to have control on it's design." />
             <m:MaterialTitle title="Variation 1 : Floating" />
-            <m:MaterialImage url="http://i.imgur.com/hKKN3Fy.png" />
+            <m:MaterialImage url="http://i.imgur.com/fhOn7h4.png" />
             <demo:PrettyPre addStyleNames="lang-xml z-depth-1">
                 &lt;!-- Variation No. 1 - Floating Fixed. --> <br/>
                 &lt;m:MaterialSideNav m:id="sidenav" type="FIXED" alwaysShowActivator="true" showOnAttach="true" backgroundColor="grey lighten-4" top="68" shadow="0"><br/>
@@ -88,7 +88,7 @@
             </demo:PrettyPre>
 
             <m:MaterialTitle title="Variation 2 : Clip" />
-            <m:MaterialImage url="http://i.imgur.com/fhOn7h4.png" />
+            <m:MaterialImage url="http://i.imgur.com/hKKN3Fy.png" />
             <demo:PrettyPre addStyleNames="lang-xml z-depth-1">
                 &lt;!-- Variation No. 2 - Clip Fixed --><br/>
                 &lt;m:MaterialSideNav m:id="sidenav" type="FIXED" alwaysShowActivator="true" showOnAttach="true" backgroundColor="white" top="64" shadow="0"><br/>