1. change mattermost color and gitlab color to official color
2. Add mattermost icon because Fork-awesome/font-awesome doesn’t provide mattermost icon
Signed-off-by: BoHong Li <a60814billy@gmail.com>
This refactors the configs a bit to now use camel case everywhere.
This change should help to clean up the config interface and make it
better understandable.
Signed-off-by: Sheogorath <sheogorath@shivering-isles.com>