Update Bug70672.hooks.php

* Change message identifier
* Remove closing PHP tag
Update Bug70672.php

* Remove closing PHP tag
* Some minor formatting
Update README.md

Extend README
Create de.json

Add German translations
Update README.md

Tweaks and updates
Update en.json

* Change to describing what the extension does rather than the rationale for it
* Change to be more verbose about what happens when scary code is detected
* Make message identifier consistent
Update Bug70672.php

Add licence-name
Merge pull request #1 from kghbln/master

Applying several tweaks