Miscutils: fix for send_email error on DEV site

* For the DEV site send_email function was failing while trying to
  concatenate list and string (because the CFG_SITE_ADMIN_EMAIL
  was not a list).
It smells like a hack to me.

Note that you're already giving `bccaddr` to `forge_email`, this one should create the correct email. If you put the `BCC` once again in the `TO`, what's the point of it being a `BCC` in the first place?
```python
# here do
server.sendmail(fromaddr, toaddr, body)
# ...
# scroll scroll scroll
# ...
# I'd check if this piece is actually called when you expect it to be.
msg_root['Bcc'] = bccaddr
```