Removed possibility of reinstalling Instances

change sys_userid and sys_groupid for webdav users, web folders, web folder users, cron, database users and aps instances when domain's owner is changed

Completly same functionality as VHost-Subdomain, not to disable if already existing vhostalias-somains in system.

Fixed/Implemented: replaced intval() by $app->functions->intval() in all interface functions due to big number problem in intval()

Fixed: Subtemplates can now be given on client creation in remoting (i.e. 10/34/21 for multiple addons)
Changed: template applying moved to separate class
Fixed: force_suexec was not taken from templates

- Added interface plugins for db and db users
- changed remoting (splitted up insert, update and deletequery)

- Added plugin for vhost subdomains to catch onafterinsert/update

Merged revisions 3049-3051,3053-3054,3058,3070,3074-3077,3082,3086-3088,3091-3092,3094-3095 from stable branch.

Added a example file for adding a VM with the remote API

- Added UFW firewall support.