forwarding email functionality

[tomholub]

the iOS app has a reply button but is missing a forward button

for now skip attachments - don't include them when forwarding

[tomholub]

If you have extra time before I assign more, can look into attachments too

[tomholub]

Follow browser extension functionality when possible for the format of the reply message

[tomholub]

I'll file another issue for including attachments in the forwarded message