Danbury Mayor Mark Boughton has been released from the hospital after suddenly collapsing, suffering an apparent seizure while attending a GOP candidates' event in Avon last night.  City Council President Joe Cavo says the Mayor’s illness was due to dehydration.  Cavo visited with Boughton in the hospital.  Unlike when Boughton underwent life-saving brain surgery last year, he did not temporarily hand over duties to Cavo.  Democrat Al Almeida says despite being Boughton's adversary in last year’s municipal election, he is offering prayers and hopes for a speedy recovery.