Moves acadmic image to assets folder

Some feature not active anymore, but some lab pages seem to try to load this image from academies template, but is not found by assets library.

app/models/academic.rb

@@ -28,7 +28,7 @@ class Academic < ActiveRecord::Base
 
   belongs_to :user
   belongs_to :lab
-  belongs_to :approver
+  belongs_to :approver, class_name: 'User'
 
   validates_presence_of :started_in, :lab, :user
 

spec/features/academics/listing_students_spec.rb

@@ -0,0 +1,29 @@
+require 'spec_helper'
+
+feature "Showing students" do
+
+  given(:lab) { FactoryBot.create(:lab, workflow_state: 'approved') }
+  given(:user) { FactoryBot.create(:user, first_name: "Homer", last_name: "Simpson", workflow_state: "verified") }
+  given(:academic) { FactoryBot.create(:academic, user: user, lab: lab) }
+
+  scenario "as visitor" do
+    academic.approver = user
+    visit lab_url(lab)
+    expect(page).not_to have_content("Fab Academy Students")
+  end
+
+  scenario "as a academy user" do
+    admin = FactoryBot.create(:user)
+    admin.add_role :superadmin
+    admin.add_role :academy
+    admin.verify!
+    sign_in admin
+
+    academic.approver = admin
+    visit lab_url(lab)
+
+    expect(page).to have_content("Fab Academy Students")
+    expect(page).to have_content("Academy Website")
+  end
+
+end