* Add 'in service mesh ...' to the composite rows in Service List page
* Add associated services count to terminating and ingress gateways in Service List page
* Update mesh icon in icon-defintion files
* ui: Various CSS amends
1. Split out %icon-definition from %composite-row
2. Add hover effect to node listing
3. Fix up proxy level list components
4. Rename our various pills to use a 100-900 scale
5. Reogranize other icon related things (consul-kind and
consul-external-source)
* Fix up upstream test