Rename all fw4spl mentions into sight

Description

Rename wherever possible. For URLs, we might need to update the websites first. But we can still start to work on this and update them later.

changed time estimate to 4h

assigned to @jwaechter

assigned to @eharquel

created branch 1-rename-all-fw4spl-mentions-into-sight

mentioned in merge request !7 (merged)

added 3h of time spent at 2018-11-15

added 1h of time spent at 2018-11-16

closed via merge request !7 (merged)

mentioned in commit 584d7239