BUGFIX: {$var|parsewidget:'module':'action':'id'} now listens to the id

## Problem

When using ```{$var|parsewidget:'module':'action':'id'}``` directly on a template, you often get errors in your FrontendBlockWidget because you have sometimes used $this->data[xxx]. But when parsing directly, these $this->data[xxx] values aren't assigned.

## Solution

We should assign all correct data for that 'id', when we have added an 'id' to the parsewidget rule.
The FrontendBlockWidget now gets the data that is linked to that 'id' + 'module' + 'action'.