Allow filtering via UI

app/views/statistics/rfc_activity_history.html.slim

@@ -1 +1,22 @@
+- content_for :head do
+  = javascript_include_tag(asset_path('vis.min.js', type: :javascript))
+  = stylesheet_link_tag(asset_path('vis.min.css', type: :stylesheet))
 
+.group
+  .title
+    h1 = t('statistics.graphs.rfc_activity')
+  .spinner
+  .graph#rfc-activity
+  form
+    .form-group
+      label for="from-date" = t('.from')
+      input type="date" class="form-control" id="from-date" name="from" value=DateTime.new(2016).to_date
+    .form-group
+      label for="to-date" = t('.to')
+      input type="date" class="form-control" id="to-date" name="to" value=DateTime.now.to_date
+    .form-group
+      label for="range" = t('.interval')
+      select class="form-control" id="range" name="range"
+        = [:decade, :year, :month, :day, :hour, :minute, :second].each do | key |
+          option selected=(key==:year) = key
+    button type="submit" class="btn btn-primary" = t('.update')

config/locales/de.yml

@@ -763,3 +763,8 @@ de:
       user_activity: "Nutzeraktivität"
       rfc_activity: "Kommentaranfragenaktivität"
       history: "Historie"
+    rfc_activity_history:
+      from: "Von"
+      to: "Bis"
+      interval: "Intervall"
+      update: "Aktualisieren"

config/locales/en.yml

@@ -763,3 +763,8 @@ en:
       user_activity: "User Activity"
       rfc_activity: "RfC Activity"
       history: "History"
+    rfc_activity_history:
+      from: "From"
+      to: "To"
+      interval: "Interval"
+      update: "Update"