[UI] permit session switch on all apps [UI] disable MIME sniffing [DNS] disabling DNS no longer removes key, provider setting from service [DNS] move DNS zone depopulation to end of service depopulate() call. Removes false positive on missing zone. [Bootstrapper] addin skipped when role type is directory [Billing] [billing] => demo_invoice, any account attached this invoice will be a demo account [Webmail] fix access without SSO uses shortcut [Webapps] remove conflicting htaccess directives (FollowSymLinks, Includes) from .htaccess