Correct an error message

public/javascripts/application.coffee

@@ -44,7 +44,7 @@ class MailCatcher
           success: =>
             @unselectMessage()
           error: ->
-            alert 'Error while quitting.'
+            alert 'Error while clearing all messages.'
 
     $('nav.app .quit a').live 'click', (e) =>
       e.preventDefault()

public/javascripts/application.js

@@ -75,7 +75,7 @@
               return _this.unselectMessage();
             },
             error: function() {
-              return alert('Error while quitting.');
+              return alert('Error while clearing all messages.');
             }
           });
         }