Changeset 7835 for sites/trunk/wordpress.org/public_html/wp-content/themes/pub/wporg-support/sass/mixins/_modular-scale.scss

Support Forum: Updated bbPress templates and styles

• This commit adds the bare minimum changes from ​https://github.com/Kenshino/HelpHub to implement the new Support Hub features for the Support site at ​https://wordpress.org/support
• Coding standards for existing code will follow in future commits

See #3485.