port db update improvements from zap

view/en/update_fail_eml.tpl

@@ -1,13 +1,22 @@
-Hey, 
-I'm the web server at {{$sitename}};
+Apologies but this may be urgent.
+
+This is the web server at {{$sitename}};
    
-The Hubzilla developers released update {{$update}} recently, 
-but when I tried to install it, something went terribly wrong.  
+The project developers released update {{$update}} recently, 
+but during the attempt to automatically install it, something went terribly wrong.  
 This needs to be fixed soon and it requires human intervention. 
 Please contact a project developer if you can not figure out how to 
-fix it on your own. My database might be invalid. 
+fix it on your own. Your web server database configuration might be invalid. 
 
 The error message is '{{$error}}'.   
 
+You may attempt to re-apply this update by visiting
+
+{{$baseurl}}/admin/dbsync
+
+while logged into the admin account. 
+
+{{$source}}
+
 Apologies for the inconvenience, 
-	your web server at {{$siteurl}}
+	your web server at {{$siteurl}}

view/tpl/failed_updates.tpl

@@ -9,6 +9,7 @@
 <h4>{{$f}}</h4>
 <ul>
 <li><a href="{{$base}}/admin/dbsync/mark/{{$f}}">{{$mark}}</a></li>
+<li><a href="{{$base}}/admin/dbsync/verify/{{$f}}">{{$verify}}</a></li>
 <li><a href="{{$base}}/admin/dbsync/{{$f}}">{{$apply}}</a></li>
 </ul>