ECOM-3319 loading edx-icons fonts in studio programming author tool

cms/envs/common.py

cms/static/fonts/edx-icons/edx-icons.ttf

cms/static/fonts/edx-icons/edx-icons.woff

cms/static/fonts/edx-icons/fallback-img/angle-down.svg

cms/static/fonts/edx-icons/fallback-img/angle-left.svg

cms/static/fonts/edx-icons/fallback-img/angle-right.svg

cms/static/fonts/edx-icons/fallback-img/angle-up.svg

...static/fonts/edx-icons/fallback-img/arrow-circle-down.svg

cms/static/fonts/edx-icons/fallback-img/arrow-down.svg

cms/static/fonts/edx-icons/fallback-img/arrow-up.svg

cms/static/fonts/edx-icons/fallback-img/arrows-alt.svg

cms/static/fonts/edx-icons/fallback-img/bars.svg

cms/static/fonts/edx-icons/fallback-img/book.svg

cms/static/fonts/edx-icons/fallback-img/bullhorn.svg

cms/static/fonts/edx-icons/fallback-img/calendar.svg

cms/static/fonts/edx-icons/fallback-img/camera.svg

cms/static/fonts/edx-icons/fallback-img/caret-down.svg

cms/static/fonts/edx-icons/fallback-img/caret-left.svg

cms/static/fonts/edx-icons/fallback-img/caret-right.svg

cms/static/fonts/edx-icons/fallback-img/caret-up.svg