Some documentation updates.
New upstream release.
Fix setting root device UUID.
Add new live image.
Consistently use https://lists.a-eskwadraat.nl for mailinglist URLs.
Fix commit 1ad1c1b99: really enable SSH password logins.
Fix code documentation typo.
Download DOMjudge deb packages from Thijs' uvt.nl mirror and
make it easier to set an APT proxy (requires DOMjudge 4.0).
Add recommended max_file_uploads PHP setting.
Make grub changes work with Debian Jessie.
Add TODO notes for live image packaging of Debian Jessie/DOMjudge 4.0.
Correct corrupted live image of 3.4.4 release.
Updates for Debian Jessie:
- update Java version 6 -> 7
- udev cd-aliases-generator rules doesn't exist anymore
- fix for new apache 2.4 directory layout
Add new version of dj_make_chroot that overrides package
installed version and supports setting APT proxy.
Fix 67927716: Wheezy release is at version 7.6.
Update documentation for generating a live image with
WIP code for using Debian Jessie.
Merge branch 'master' of https://github.com/domjudge/domjudge-packaging into 4.0-update

Conflicts:
	debian/patches/020_debian_database.php.patch