add 'get started' link to the bottom of class home pages

Change-Id: I0f4615562efca083e7d1c50bb9e9eaa2cc250ced

tools/droiddoc/templates-sdk/assets/css/default.css

@@ -528,6 +528,11 @@ video.with-shadow {
     width:262px;
   }
 
+  .paging-links a.start-class-link {
+    width:100%;
+    text-align:right;
+  }
+
   /* list of classes on course landing page */
   ol.class-list {
     list-style:none;
@@ -4902,7 +4907,7 @@ a.download-sdk {
   color:#555;
   text-transform:uppercase;
   border-bottom:none;
-  margin:0;
+  margin:0 0 1em;
   padding:5px 0 0;
 }
 

tools/droiddoc/templates-sdk/docpage.cs

@@ -156,6 +156,14 @@
                 ja-lang="次へ"
                 es-lang="Siguiente"
                 >Next</a>
+            <a href="#" class="start-class-link hide"
+                zh-tw-lang="開始上課"
+                zh-cn-lang="开始"
+                ru-lang="Начало работы"
+                ko-lang="시작하기"
+                ja-lang="開始する"
+                es-lang="Empezar"
+                >Get started</a>
           <?cs /if ?>
         </div>
         <?cs /if ?>