Make data consistent from dashboard -> job

- adds a table of recent activity to the job page, which is shared by the
  dashboard page
- uses the same filename and message template as the first job shown on the
  dashboard
- sets the time of file uploads/message delivery/message sending to always
  match ‘just now’

app/main/views/index.py

@@ -9,6 +9,12 @@ def index():
     return render_template('views/signedout.html')
 
 
+@main.route("/dashboard")
+@login_required
+def dashboard():
+    return render_template('views/dashboard.html')
+
+
 @main.route("/govuk")
 def govuk():
     return render_template('views/govuk_template.html')