When email change fails, give appropriate error message

Previously it would always say "Password was incorrect" on failure,
whether that was the actual problem or not.

app/controllers/maintenance/user/email_changes_controller.rb

@@ -6,11 +6,12 @@ module Maintenance
 
       def create
         email_change = UserEmailChange.new(CurrentUser.user, params[:email_change][:email], params[:email_change][:password])
-        if email_change.process
-          redirect_to(edit_user_path(CurrentUser.user.id), :notice => "Email was updated")
+        email_change.process
+        if CurrentUser.user.errors.any?
+          flash[:notice] = CurrentUser.user.errors.full_messages.join("; ")
+          redirect_to(new_maintenance_user_email_change_path)
         else
-          flash[:notice] = "Password was incorrect"
-          render :action => "new"
+          redirect_to(edit_user_path(CurrentUser.user.id), :notice => "Email was updated")
         end
       end
     end