Added messages migration
Added chatrooms migration
Modified create_chatrooms migration
Added chatroom_members migration
Added banned_chatroom_members migration
Added chatroom_log migrations
Added create_activities migration
Added temporary migration for activity tags
adding table events
adding columns to table events
Fixes initialization bug in RegisteredUser model #138
Fixes ChildrenController child_params #138
Merge branch 'migrations' of https://github.com/yousraHazem/Topsoft-14 into C2_S6_As_a_supervisor_I_can_signup_children_with_no_parents_available
solving some conflicts
modify events
Merge branch 'migrations' of https://github.com/yousraHazem/Topsoft-14 into C2_S6_As_a_supervisor_I_can_signup_children_with_no_parents_available

I need the database
Adds dynamic secret token generation
Creates supervisor controller and associated files
Creates supervisors layout #138
Creates initial supervisors stylesheet with style for confirm button and collapsable fields #138