Make htuser-mgm fully working (BUG 297)

[malte]

multiple user with multiple secured directories are not working as expected. user will be deleted/overwritten in htpasswd not added.

for reproducing try this:

1. add a secured directory for example: /var/www/virtual/domain.de/secured_dir1/ secure it for: user_a

--> user_a will be created in /var/www/virtual/domain.de/.htpasswd

2. add a second dir and secure it with different user: /var/www/virtual/domain.de/secured_dir2/ secure it for: user_b

--> now user_b will not be _added_ - it just overwrites user_a in /var/www/domain.de/.htpasswd with user_b

--> in gui everything looks normal and as expected (2 dirs with 2 different users) - but only one user exists in real

[malte]

Milestone 2.4.7.2-stable deleted