Allow any 1.3.x version of Django

Change-Id: I30c3da1d7be22991855b0d3fe4d93a502d4908a1
Signed-off-by: Paul Belanger <paul.belanger@polybeacon.com>
Initial support for SIP subscribers

Also take the time to properly document our LICENSE headers

Change-Id: I5cacb6f8d81d47dc15c986c2e9c87acd36c67a12
Signed-off-by: Paul Belanger <paul.belanger@polybeacon.com>