maarten/aardbei: Sprankelprachtig aan/afmeldsysteem

Sprankelprachtig aan/afmeldsysteem

Maarten van den Berg 5248c6210f I forgot to commit		8 lat temu
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concerns	f22d20f542 Initial commit: rails new, first models	8 lat temu
activity.rb	5248c6210f I forgot to commit	8 lat temu
application_record.rb	f22d20f542 Initial commit: rails new, first models	8 lat temu
group.rb	5248c6210f I forgot to commit	8 lat temu
member.rb	f22d20f542 Initial commit: rails new, first models	8 lat temu
participant.rb	f22d20f542 Initial commit: rails new, first models	8 lat temu
person.rb	5248c6210f I forgot to commit	8 lat temu
session.rb	13a07c2612 Basic login	8 lat temu
user.rb	7680dfb081 Add user validation	8 lat temu