image size css for topic first post, facebook app id in template

public/css/topic.less

@@ -111,6 +111,7 @@
 			margin-bottom: 0px;
 			padding-bottom: 0px;
 			text-align: center;
+			width:80px;
 			
 			@media (max-width: 767px) { 
 				display: none;

public/templates/admin/facebook.tpl

@@ -9,7 +9,7 @@
 			then paste your application details here.
 		</p>
 		<br />
-		<input type="text" data-field="social:facebook:app_id" title="Application ID" class="input-medium" placeholder="App Key"><br />
+		<input type="text" data-field="social:facebook:app_id" title="Application ID" class="input-medium" placeholder="App ID"><br />
 		<input type="text" data-field="social:facebook:secret" title="Application Secret" class="input-large" placeholder="App Secret"><br />
 	</div>
 </form>