Motivation
Namespaces have an icon for better discoverability. Right now, the icons are not always appropriate
Acceptance Criteria
- The following namespaces have the icons as linked, RTL or LTR as appropriate
main space
user
project namespace
file
mediawiki
template
help
category
portal
module
gadget
- other discussion namespaces get the icon as uploaded by @Volker_E
- all remaining namespaces get the fallback icon