Links removed from sum rows in stats

Implemented:  FS#2388 - Optional confirm window on changing tabs

Corrected paths in main tpl

Moved old default theme to themes/default-304

Updated default-v2 design and added missing templates, missing code parts and deleted old files and code parts

- 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

Fixed: folder protection is removed twice

Ensure that folder protection is deactivated for the path of the base website when deleting a vhostsubdomain.

Bugfix: $app->system->unlink function had wrong parameter name, no files were deleted ever

- Added overtraffic notifications to traffic quota system (part of FS#2059 - Extend Traffic quota system)

Bugfix on db-Class (datalog Update)

Could not create vhost subdomain as client

Bugfix: Show error message on smtp enabled without administrator mail / name

Made web_folder field read only on edit