removed unnecessary bak-files

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

- Fill IP select fields with IP from correct server even if the user's default web server is another server. Otherwise if the user opens the web form, the wildcard * is selected, and if he changes the tab, the wildcard is saved instead of the correct IP so that the website will no longer work.

- nginx pm settings: values were limited to 3 figures (so max. value was 999), increased this to 6 figures.

Removed workarounds

- Added fields to client, reseller and website to show when a record was added and by which user

Changed query syntax of alias domain edit file
Changed deprecated syntax in alpha plesk importer

- nginx: added {DOCROOT} and {FASTCGIPASS} placeholders to directive snippets and nginx Directives fields.

- Display server name in all web domains select fields so that you know which domain from which server you select.

- Websites and Vhostsubdomains: When editing a web, show quota and traffic errors to client/reseller only if he has changed those values; don't show errors for unchanged values.