Improve error message on failed http connection

program/include/rcmail.php

@@ -431,7 +431,7 @@ class rcmail extends rcube
         }
 
         // add some basic labels to client
-        $this->output->add_label('loading', 'servererror', 'requesttimedout', 'refreshing');
+        $this->output->add_label('loading', 'servererror', 'connerror', 'requesttimedout', 'refreshing');
 
         return $this->output;
     }

program/js/app.js

@@ -1901,7 +1901,7 @@ function rcube_webmail()
     tree += '<span id="msgicn'+uid+'" class="'+css_class+'">&nbsp;</span>';
     row.className = row_class;
 
-    // build subject link 
+    // build subject link
     if (cols.subject) {
       var action = flags.mbox == this.env.drafts_mailbox ? 'compose' : 'show';
       var uid_param = flags.mbox == this.env.drafts_mailbox ? '_draft_uid' : '_uid';
@@ -7063,7 +7063,7 @@ function rcube_webmail()
     else if (status == 'timeout')
       this.display_message(this.get_label('requesttimedout'), 'error');
     else if (request.status == 0 && status != 'abort')
-      this.display_message(this.get_label('servererror') + ' (No connection)', 'error');
+      this.display_message(this.get_label('connerror'), 'error');
 
     // redirect to url specified in location header if not empty
     var location_url = request.getResponseHeader("Location");

program/localization/en_US/messages.inc

@@ -24,6 +24,7 @@ $messages['sessionerror'] = 'Your session is invalid or expired.';
 $messages['storageerror'] = 'Connection to storage server failed.';
 $messages['servererror'] = 'Server Error!';
 $messages['servererrormsg'] = 'Server Error: $msg';
+$messages['connerror'] = 'Connection Error (Failed to reach the server)!';
 $messages['dberror'] = 'Database Error!';
 $messages['requesttimedout'] = 'Request timed out';
 $messages['errorreadonly'] = 'Unable to perform operation. Folder is read-only.';