Revert "Changed tab width to 4, added @see to https://michelf.ca/projects/php-markdown/configuration/"
Revert "Changed tab width to 4, added @see to https://michelf.ca/projects/php-markdown/configuration/"

This reverts commit 104034605f9d6e5a59fc3fda393e0bc452572c8b which
should have been merged into develop, not master.

james2doyle/Phile,james2doyle/Phile,james2doyle/Phile