net/dante: update to 1.4.2

• Update to 1.4.2
• Update MASTER_SITES
• Register LIB_DEPENDS ON net/miniupnpc and security/cyrus-sasl2
• Update WWW in pkg-descr
• Take maintainership

Changes: https://www.inet.no/dante/announce-1.4.2

Reviewed by: jbeich
MFH: 2017Q3
Differential Revision: https://reviews.freebsd.org/D11552