Admin->Menu tab

Created by: dtu-compute

Depends on #168.

Admin->Menu would have a form and a Save and Update button. Syntax for the menu could eg be:

Agenda    | Agendas.adoc
Info      | Time_table.adoc
Info      | Teachers.adoc
Info      | Links.adoc
eNoter    | eNotes/
Podcasts  | Podcast A                | http://podcast.llab.dtu.dk/feeds/01005a-forelaesninger-e18f19/?tx_enotepodcast_pi1[data]=true
Podcasts  | Normal link              | https://google.com
Links     | Name of link             | https://google.com
Links     | Name of link 2           | https://youtube.com
Quiz      | https://quiz.example.com

This would be a main menu where Info is a drop down with 3 items, eNoter is a special case just like now, Podcasts is drop down with two items called Podcast A and Normal link.

Clicking Update would parse and compile the eNotes and Podcast links.