Enable fontforge checks

[felipesanches]

Originaly submitted at fonttools/fontbakery#1298

Fontforge checks are not currently running on the worker container.

Fontforge instalation commands were added to the worker container image (via Dockerfile apt-get install statements) but the fontforge python module is not found at runtime.

[davelab6]

@felipesanches can this be closed? Or is this to have a separate tab on the details page regarding these checks?

[felipesanches]

This is about having fontforge properly installed and functional on the worker container. @graphicore is in a better position to let us know if the current setup of fontforge on the worker container fullfils that requirement or if it is still misconfigured.

[graphicore]

fontforge is working at the moment:

fontbakery-dashboard/containers/worker-fontbakery/Dockerfile

Lines 5 to 8 in 8a11f17

	&& add-apt-repository ppa:fontforge/fontforge \
	&& apt-get update \
	&& apt-get install -y python-pip curl mono-complete libicu-dev \
	fontforge-nox python-fontforge git build-essential \