Add error cat to error page

Author: sulkaharo

static/images/errorcat.jpg

@@ -23,7 +23,7 @@
 
     table {
         margin: auto;
-        width: 50%;
+        width: 70%;
     }
 
     td {
@@ -40,14 +40,14 @@
 
 <table>
 <tr>
-<td width='30%'>
+<td width='40%'>
 
-<img src="/images/large.png">
+<img src="/images/errorcat.jpg" width="90%">
 
 </td>
 <td>
 
-<h1>Oops - Nightscout had trouble starting</h1>
+<h1>Oops - Nightscout is having trouble</h1>
 
 <p>Don't panic, we can work this out! This happens to the best of us.</p>
 <p>Check the errors below and then refer to the