Add live graphs for active users and submission volume

config/locales/de.yml

@@ -221,6 +221,7 @@ de:
       destroy_through_lti: Code-Abgabe
     statistics:
       show: "Statistiken"
+      graphs: "Visualisierungen"
   consumers:
     show:
       link: Konsument
@@ -755,3 +756,4 @@ de:
         with_comments: "Anfragen mit Kommentaren"
       users:
         currently_active: "Aktiv (5 Minuten)"
+        currently_active60: "Aktiv (60 Minuten)"

config/locales/en.yml

@@ -221,6 +221,7 @@ en:
       destroy_through_lti: Code Submission
     statistics:
       show: "Statistics"
+      graphs: "Graphs"
   consumers:
     show:
       link: Consumer
@@ -755,3 +756,4 @@ en:
         with_comments: "RfCs with Comments"
       users:
         currently_active: "Active (5 minutes)"
+        currently_active60: "Active (60 minutes)"

config/routes.rb

@@ -43,6 +43,7 @@ Rails.application.routes.draw do
   get '/help', to: 'application#help'
 
   get 'statistics/', to: 'statistics#show'
+  get 'statistics/graphs', to: 'statistics#graphs'
 
   concern :statistics do
     member do