update the rest of admin/mnet to new standards

Quick list:

• Completed:

delete.php
peers.php
peer_forms.php
profilefields.php
profileform.php
services_form.php
services.php
tabs.php
testclient.php

• Not completed:

access_control.php - should be switched to using moodle forms, needs proper doc template at the top
enr_hosts.php - prints a list of all hosts that can accept mnet enrolments. Should be switched to html_table and needs proper doc template at the top
enr_courses.php - prints a list of all remote courses for a given host. Should be switched to html_table and needs proper doc template at the top

enr_course_enrol.php - prints the two drop down menus to enrol/unenrol students on a single course on a remote host
enr_course_enrol.html - contains the form definition

These two should be merged and use a moodle form instead. There is inline sql rather than a libary call and both are lacking doc templates at the top.

index.php - displays the current key and allows the user to delete it. Seems to contain two different forms, maybe because previously the networking on/off setting was on this page too. Needs to be migrated to new OUTPUT single button stuff and needs proper doc template at the top.

mnet_themes.html
mnet_themes.php

Completely disabled - have die() at the top (still in tabs.php though !!)

trustedhosts.php
trustedhosts.html

These two seems to be to make a list of host ips to allow plaintext (not normal encrypted MNET connections) from. It should possibly be removed, and at any rate, migrated to an moodle form. Needs proper doc template at the top.

I would also consider renaming some of those files:

enr_hosts.php to enrol/hosts.php
enr_courses.php to enrol/courses.php
enr_course_enrol.php to enrol/enrol.php

If kept, mnet_themes* should be renamed to just themes* (I did this already with services.php)