Add width and height HTML attributes to static image in templates.

r2/r2/templates/over18.html

@@ -26,7 +26,7 @@
   <p class="error">
     ${_("you must be at least eighteen to view this reddit")}
   </p>
-  <img src="${static('over18.png')}" alt="" />
+  <img src="${static('over18.png')}" alt="" height="254" width="180" />
   
   <form method="post" action="" class="pretty-form"
       ${"target='_top'" if c.cname else ""}>

r2/r2/templates/passwordverificationform.html

@@ -28,7 +28,7 @@
 <%namespace file="utils.html" import="error_field"/>
 
 <div class="content over18" style="text-align: center">
-  <img src="${static('over18.png')}" alt="" />
+  <img src="${static('over18.png')}" alt="" height="254" width="180" />
 
   <h1>let me see your papers</h1>