GitLab

- Added switch to disable import function in config.inc.php
- Merged language files.

- Make sure clients can get only the PHP versions they are allowed to get even if the website is created by admin or a reseller.

- Dashlets can now be managed from interface config (left column, right column, position, etc.). Defaults dashlets are used if appropriate fields in interface config are left empty. TODO: formatting of dashlets; they need to adjust themselves to left or right column.

- Fixed: sys_user doesn't use 'y'/'n' but 1/0 - so client_edit set wrong value on canceled y/n switching

- Implemented:  FS#1312 - disabling a whole client
    -> see bugtracker comments for more details
- Fixed:  FS#3060 - Subdomain vhost ip update on web domain update
- Implemented:  FS#3078 - Change client template system: delete specific template from limits 
    -> including link in billing module to link specific assigned templates
- Fixed:  FS#3058 - Error in mail quota calculation when changing tab in mailboxe configuration
    -> quota limit no longer checked if it was not changed
- Fixed: Deleting a client's template could mess up his assigned templates
- Added: remoting functions to change client templates the new way

- Added rewrite rule checks to nginx plugin.