bulma (file, components): fix color fo icons: icons have no color specified anymore for a while, and use the color of parent elements. As they are often used in a `<a>` element (to work without javascript), they are often using a link color. This commit change a few icons to use a dark color instead.

include MANIFEST.in sat_templates/VERSION
global-include *.py
global-include *.html *.xml
global-include *.css *.js
global-include *.woff *.woff2
global-include *.ini
global-include *.po *.mo
global-include *.txt
global-include CHANGELOG COPYING* INSTALL README*
global-exclude *.un~