Use format_html instead of mark_safe
Use format_html instead of mark_safe

Fixes #25.

roverdotcom/gargoyle,YPlan/gargoyle,roverdotcom/gargoyle,YPlan/gargoyle,nkovshov/gargoyle,nkovshov/gargoyle,YPlan/gargoyle,roverdotcom/gargoyle,nkovshov/gargoyle