added public email to events, displays for logged in users on event show

[fixes 45626967]

Conflicts:
	db/schema.rb
	spec/requests/new_event_request_spec.rb
default public_email sets to organizer's registered email

[fixes #45626967]
Merge branch 'public_email' of https://github.com/Polyrhythm/bridge_troll into Polyrhythm-public_email

Conflicts:
	db/schema.rb