Change owner on domain module changes on mail domain, sites and dns too

It's related to #97 merge request
Instead of displaying a warning about owner must be changed on mail and domain too, change it everywhere.

I have fixed some records which were not changed owner when changing mail domain's owner or web site's owner.

If you agree, I'm thinking in disable client selector on mail, domain and dns when domain module is enabled.

Reseller quota

When a reseller has some quota established, they shouldn't be allowed to create clients without quota or assign more quota to their clients. If they are allowed (as it's done now), total quota used by their clients can be higher than reseller limit, and when reseller try to edit site or mailbox, then quota can be changed to 0.

Merge branch 'favourite_servers' of http://git.ispconfig.org/Cambra/ispconfig3 into Cambra/ispconfig3-favourite_servers

Conflicts:
	install/sql/incremental/upd_dev_collection.sql

Hide used domains

Domain must be unique for mail, dns or web site, so there is no point in get used domains on domain select (with domain module enabled) and this patch get only unused domains. For subdomains it doesn't apply, so it's not used.

This patch added some code to dns module because I added domain select on merge request #105 and commit is included here because I based this branch on branch from merge request #105. I can rebase to master if you #105 is merged if it's needed.

Master Fixes

Change for vmail-uid/gid settings in subdomains and aliasdomains

- Added incremental sql query collection file to make merging easier and avoid high patch file count

Fix is reseller

reseller are now allowed to have -1 for limit_client, but I found another place where a > 0 check was used

Master

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

set webdav sys_groupid onAfterInsert, it didn't work onBeforeInsert. Change server_id and sys_groupid if parent_domain_id changes

Unlimited clients

Allow unlimited clients for reseller

Conflicts:
	interface/lib/lang/es.lng

Master