Ensure we have a fallback avatar

webadmin/src/error.html

@@ -77,7 +77,7 @@
 
 <div class="wrapper">
     <div class="content">
-        <img ng-src="{{ cloudronAvatar || '/img/logo_inverted_192.png' }}"/>
+        <img ng-src="{{ cloudronAvatar || '/img/logo_inverted_192.png' }}" onerror="this.src = '/img/logo_inverted_192.png'"/>
         <h1> {{cloudronName}} </h1>
 
         <div ng-show="errorCode == 0">

webadmin/src/nakeddomain.html

@@ -59,7 +59,7 @@
 
 <div class="wrapper">
     <div class="content">
-        <img ng-src="{{ cloudronAvatar || '/img/logo_inverted_192.png' }}"/>
+        <img ng-src="{{ cloudronAvatar || '/img/logo_inverted_192.png' }}" onerror="this.src = '/img/logo_inverted_192.png'"/>
         <h1> {{cloudronName}} </h1>
         <p>
             There is no app configured for this domain. If you want to put an app at this location,<br/>

webadmin/src/theme.scss

@@ -690,10 +690,6 @@ $graphs-success-alt:    lighten(#27CE65, 20%);
         bottom: 0;
         width: 100%;
     }
-
-    h1 {
-        margin-top: 0;
-    }
 }