Update Ruby version to 2.3.1 in Handbook
As the title says
This also closes my onboarding issue #785
I'm fairly certain that manager and team-lead are the same thing, so cc @rymai
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
As the title says
This also closes my onboarding issue #785
I'm fairly certain that manager and team-lead are the same thing, so cc @rymai