write knexjs memo, work on migrations, work on seeds

db/migrations/20181110100101_create_groups.js

...rations/20181110100202_create_childtable_simple_groups.js

...igrations/20181110100303_create_childtable_meta_groups.js

...10100404_create_associativetable_metagroup_memberships.js

db/migrations/20181110110101_create_messages.js

...rations/20181110110202_create_childtable_announcements.js

db/migrations/20181110110303_create_childtable_events.js

...rations/20181110110404_create_childtable_private_posts.js

db/migrations/20181110110505_create_childtable_questions.js

db/migrations/20181110110606_create_childtable_answers.js

db/migrations/20181110120101_create_requests.js

...tions/20181110120202_create_childtable_user_join_group.js

.../20181110120303_create_childtable_group_join_metagroup.js

.../20181110120404_create_childtable_group_coauthor_event.js

db/migrations_old/20180225001319_create_groups.js

db/migrations_old/20180302130024_create_messages.js

db/migrations_old/20180302152113_requests.js

db/migrations_old/20180303192411_create_metaGroups.js

db/migrations_old/20180304154225_group_type_column.js

db/migrations_old/20180305111321_metaGroup_member_table.js