events_documentation: Document all events of type stream and some others.
events_documentation: Document all events of type stream and some others.

Document all events of `type`=stream i.e all `op`s. Also document some other
events.

Tweaked by tabbott to clarify some documentation details (especially
around who receives events).

kou/zulip,zulip/zulip,brainwane/zulip,kou/zulip,andersk/zulip,zulip/zulip,punchagan/zulip,rht/zulip,punchagan/zulip,rht/zulip,brainwane/zulip,eeshangarg/zulip,showell/zulip,eeshangarg/zulip,showell/zulip,brainwane/zulip,showell/zulip,punchagan/zulip,hackerkid/zulip,zulip/zulip,showell/zulip,eeshangarg/zulip,zulip/zulip,zulip/zulip,punchagan/zulip,hackerkid/zulip,hackerkid/zulip,rht/zulip,punchagan/zulip,brainwane/zulip,kou/zulip,hackerkid/zulip,andersk/zulip,andersk/zulip,punchagan/zulip,brainwane/zulip,kou/zulip,rht/zulip,kou/zulip,eeshangarg/zulip,eeshangarg/zulip,hackerkid/zulip,rht/zulip,kou/zulip,rht/zulip,kou/zulip,showell/zulip,andersk/zulip,andersk/zulip,brainwane/zulip,andersk/zulip,zulip/zulip,rht/zulip,hackerkid/zulip,hackerkid/zulip,brainwane/zulip,punchagan/zulip,showell/zulip,eeshangarg/zulip,andersk/zulip,eeshangarg/zulip,showell/zulip,zulip/zulip