features request #1

[nicola di maria <info nicoladimaria info>]

Epiphany surprised me. I would like to adopt it as my default browser but I still miss some 
less or more important features:
- close other tabs
- close left/right tab
- duplicate tab
- mailto link doesn't work in xfce, no email client is opened at all
- shift+delete to delete wrong suggestions in url bar
- .po support for translation
- embed the third part extension (after testing)

thanks
nicola