Dial a device even if it's state is unknown.

(closes issue #12184)
Reported by: bluecrow76
Patches:
      asterisk-svn-app_page.c.devicestate_unknown.diff uploaded by bluecrow76 (license 270)


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@107710 65c4cc65-6c06-0410-ace0-fbb531ad65f3