[asterisk-gui] sending of backup to email address

[Stephen Coles]

using the backup tab the ability to email the backup and email backups
to asterisknow (or browse for them on the nework) would mean i can keep
the settings offsite and also save having to plug in a storage device

im using:
	Asterisk Build:
	Asterisk 1.4.4
	Asterisk GUI-version Revision: SVN-branches_asterisknow+r2268