update require and use for tx_nG6_db and utils

See merge request !130

Typo3v10

See merge request !129

Merge branch issue#210 and master

See merge request !128

The ssh user test has been fixed (there was a permission error).

Issue #210

Merge branch Issue#205 with master

See merge request !126

The path to the PasswordHashFactory class has been updated with the new
typo3 version. This commit fixes the hash_password() function.

Issue#205

Update quickstart.html

See merge request !125

Update index.html

See merge request !124

Typo3 v9

See merge request !123

Typo3 v9

See merge request !122

conformity to typo3 V9.5

See merge request !121

#182 adding links to faq

See merge request !119

Merge branch Dev with Master

See merge request !118

# Conflicts:
#   ui/nG6/pi6/class.tx_nG6_pi6.php

A "}" was missing.

Issues #195, #193, #192, #178

The send_purge_demand_mail() is now going to send an alert mail to the
nG6 admins if a purge demand already exists for a given project, instead
of creating a new one.

Issue #192

New function get_multiple_purge_demand_mail() to warn the nG6 admins
that a purge demand already exists for the given project.

Issue #192