Some design changes:
====================
- Started MailView class as a hack and still doing it the same way. 
Right design should be:
MailView should be the base class for MailFoOView. ->activate(), and others should be just functions overridden 
by the derived classes. 

Effort: 1 day of max time.


Features:
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- Network manager integration. Should listen for the NM/DBus signal and set offline/online. Look at e-shell-nm.c in Evo's source.
- Add GtkHTML as another mail renderer.
- Add MozillaClutter as a rendered in mail-message-view.c

