Initial import of Template:SubpageMenuByCategories
Initial import of Template:SubpageMenuByCategories

https://developer.mozilla.org/en-US/docs/Template:SubpageMenuByCategories

Contributors (by MDN username):
* BychekRU
* groovecoder
* hamasaki
* lorchard_mozilla
* Sebastianz
* Sheppy

a2sheppy/kumascript,jpmedley/kumascript,a2sheppy/kumascript,jpmedley/kumascript