Turned off staff confirmation..
Closed #31
Added SQL query count in footer
Confirmation e-mail sending disableable in config
Admins can view user e-mails too

They could do this anyway by doing simple SELECTs. This change is just to make
admins' lives easier.
Activation mails are trying hard not to be spam

...and fail miserably at that. I sneaked an important bugfix in, though.