recommending guest now saves to database

Validation checks on both names, email, reason (kind of in loco bio. It
changes when the recommend guest accepts our invitation and updates us
with a proper bio themselves.)
added flash messages on both success and failure
added min_length validators to required fields
removed unused packages
added default values to form fields

I guess this was the reason empty strings (unicode) were getting saved
to the database. Problem solved by adding validators on the model