RSM

........S. [ZBXNEXT-2117] added support of new macros

 - trigger based notifications and commands
      {HOST.DESCRIPTION<1-9>}, {PROXY.DESCRIPTION<1-9>}

 - trigger based internal notifications
      {HOST.DESCRIPTION<1-9>}, {PROXY.DESCRIPTION<1-9>}

 - item based internal notifications
      {HOST.DESCRIPTION}, {PROXY.DESCRIPTION}

 - lld rule internal notifications
      {HOST.DESCRIPTION}, {PROXY.DESCRIPTION}

 - discovery notifications
      {PROXY.DESCRIPTION}

 - auto-registration notifications
      {PROXY.DESCRIPTION}