Switch to open source fonts, noto-sans and montserrat.

...ech/static_src/src/fonts/montserrat/Montserrat-Black.woff

...tech/static_src/src/fonts/montserrat/Montserrat-Bold.woff

...h/static_src/src/fonts/montserrat/Montserrat-Regular.woff

.../static_src/src/fonts/montserrat/Montserrat-SemiBold.woff

...tech/static_src/src/fonts/montserrat/Montserrat-Thin.woff

opentech/static_src/src/fonts/noto-sans/NotoSans-Bold.woff

opentech/static_src/src/fonts/noto-sans/NotoSans.woff

...static_src/src/fonts/proxima-nova/proxima-nova-black.woff

.../static_src/src/fonts/proxima-nova/proxima-nova-bold.woff

...atic_src/src/fonts/proxima-nova/proxima-nova-regular.woff

...tic_src/src/fonts/proxima-nova/proxima-nova-semibold.woff

.../static_src/src/fonts/proxima-nova/proxima-nova-thin.woff

opentech/static_src/src/sass/apply/abstracts/_variables.scss

opentech/static_src/src/sass/apply/base/_typography.scss

...tech/static_src/src/sass/public/abstracts/_variables.scss

opentech/static_src/src/sass/public/base/_typography.scss