Move dashboard resources partial to a component

We're renaming the HTML class (and removing the id attribute, which was
only used in tests) in order to follow our naming conventions.

app/components/dashboard/resources_component.rb

@@ -0,0 +1,7 @@
+class Dashboard::ResourcesComponent < ApplicationComponent
+  attr_reader :active_resources
+
+  def initialize(active_resources)
+    @active_resources = active_resources
+  end
+end