Tech Report: Add category support to Technologies page when only one tech is selected

[tunetheweb]

When selecting only one technology (for example: https://httparchive.org/reports/techreport/tech?tech=WordPress&geo=ALL&rank=ALL) it would be good to show the categories it sits in.

And, maybe as an extension to #1033 to also show the % in that category?

e.g.

Wordpress: 3.3 million sites

Category	Category origins	%
CMS	6.6 million	50%
Hosted	14.0 million	25%