Refer to vfs_snapper and vfs_btrfs man pages in help

Point users to Samba's corresponding man pages for more information
regarding the "Expose Snapshots" and "Utilize Btrfs Features" options;
(bnc#870570).
Default to a standalone server instead of a PDC

The setup wizard currently offers configuration as a Windows NT style
Primary Domain Controller (PDC) by default, if no existing PDCs are
present on the network.
Default to a standalone server instead, and add a note stating that
Windows NT style domain controller functionality will be phased out;
(bnc#870669).
3.1.5

Add SUSE Samba Team to the MAINTAINER file.
Merge pull request #16 from ddiss/bnc870570_man_page_reference

Bnc870570 man page reference