"Rent equipment"-form

This is an addition to the "Services" (Tjänster) menu. To make the process of renting equipment easier for both guild members and the Head of Facilities, there should be a page where one can submit a request to rent equipment. It should resemble the [current form used](https://forms.gle/xjqogFCTJzqZbEGa8).

Submitting the form generates an email with the information (like the mail the Council of Executives (nämnden) recieves when a facility reservation is made) to the Head of Facilites, prylm@fsektionen.se.

In the admin page you are able to create equipment items. Necessary parameters are the name, price and total number of items (of the equipment).

A more advanced alternative solution would be to implement a site like the car-rental site, but for each equipment item, of course.