"show" completion option for "queue" shouldn't appear twice

When tab-completing CLI commands starting with "queue", "show" appeared
twice in the list due to the way that Asterisk's tab completion
functions and the order in which the commands were registered. The
registration order has been altered to resolve this issue.

(closes issue AST-940)
Reported-by: Steve Pitts
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Merged revisions 373666 from http://svn.asterisk.org/svn/asterisk/branches/1.8
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Merged revisions 373675 from http://svn.asterisk.org/svn/asterisk/branches/10
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Merged revisions 373688 from http://svn.asterisk.org/svn/asterisk/branches/11


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@373689 65c4cc65-6c06-0410-ace0-fbb531ad65f3