upgrade: ziplatest: normalize paths
call MW’s update.php on freshly created Wikis

this appears to be necessary for MW extensions to create their own
tables, which is not done automatically (huh?); spotted by Beuc
Merge branch 'Branch_5_1' into Branch_5_2

Conflicts:
	src/plugins/mediawiki/cronjobs/create-wikis.php
Merge branch 'Branch_5_2' into Branch_5_3
upgrade: ziplatest: really use latest release; don't normalize files (only packages and releases)
mediawiki: create-wikis.php: drop update.php debug output
Merge branch 'Branch_5_1' into Branch_5_2
Merge branch 'Branch_5_2' into Branch_5_3
Document recent CHANGES
nscd: reload before running cronjobs, otherwise some of them fail randomly
nscd: reload before running cronjobs, otherwise some of them fail randomly (2)
mediawiki: don't create project/images/ before project/ (avoids errors in cron output)
Install appropriate package for vnc-server
Also install packages for Java, killall and netstat
fix [#750] docman, fix edit file when filename has quote
fix php syntax
Start/stop PostgreSQL with systemctl when relevant
Precise e-mail encoding (8bit) to prevent mailers from heuristically using quoted-printable [#738]
project homepage: default to http:// rather than https:// for external homepage links [#752]
Install Firefox to run the testsuite