[asterisk-gui] Fixes and new stuff

[Christian Jacobsen]

  Hi all,
I have been working with asterisk-gui for a while and trying to fix and 
add new stuff.
My mother language is spanish, so do not pay much attention to my 
spelling mistakes.
Here in TECNOERA.com, we are working in deployments for many phones 
(~400 or more), normally Polycom, and i want to share my experience with 
asterisk-gui.

Actually, we are using asterisk 1.6.2 and asterisk-gui.
I'll be very happy to help :)