site/plugins: update plugins internals
site/plugins: update plugins internals

This patch updates the plugins description on registration and reporting.

paulbellamy/scope,weaveworks/scope,paulbellamy/scope,alban/scope,paulbellamy/scope,weaveworks/scope,paulbellamy/scope,kinvolk/scope,kinvolk/scope,kinvolk/scope,kinvolk/scope,kinvolk/scope,weaveworks/scope,alban/scope,alban/scope,kinvolk/scope,weaveworks/scope,weaveworks/scope,alban/scope,alban/scope,paulbellamy/scope,alban/scope,weaveworks/scope,paulbellamy/scope