contao/core — pull request #7021 by ausi (2014-05-21 12:34:02+00:00)
Title: Strip disallowed tags from the markdown content element

Since HTML is allowed in Markdown, disallowed tags should be stripped. Currently no tags are stripped from a markdown content element.

To reproduce create a markdown content element with the following content (release/3.3.0 branch):

```Markdown
* Shouldn't be removed: ``
* Should be removed: <noframes>
```