badge for articles related to DK 1

[arhimede]

Bug Report

Q	A
Version(s)	x.y.z

Summary

ADD a badge on top of the articles related to dotkernel 1
like in the current website

twig variable parsed at runtime

[arhimede]

exaqmple this:
https://www.dotkernel.com/dotkernel/dotkernel-database-naming-conventions-for-mysql/

we need to rephrase the warning on top., to emfazis that it may be obsolte

[OStefan2001]

Implemented in #36