Don't warn about website opening the product when using Office URI

By default, when user clicks an Office URI link, Internet Explorer issues a warning that a website is trying to open a program, and asks for confirmation. This setting allows to disable the warning for Office URIs supported by the product (ms-word:, ms-excel:, ms-powerpoint:, ms-visio:, ms-access:, vnd.libreoffice.command:). Remember that this setting may be overridden by user if set in user settings. When enabled, no warning will be issued when user clicks a supported Office URI link. When disabled, the warning will be issued in this case.