Update narratives on a share event

[jayrbolton]

Getting reports that narratives do not update in ES when a narrative is shared. I'll see if I can reproduce and fix.

[jayrbolton]

Example events:

Adding read permission for user slebras:

{"wsid":44869,"ver":null,"perm":"r","evtype":"SET_PERMISSION","objid":null,"time":1611693466470,"objtype":null,"permusers":["slebras"],"user":"jayrbolton"}

Adding read/write permission for jayrbolton2

{"wsid":44869,"ver":null,"perm":"a","evtype":"SET_PERMISSION","objid":null,"time":1611693752290,"objtype":null,"permusers":["jayrbolton2"],"user":"jayrbolton"}

Removing read permission for slebras:

{"wsid":44869,"ver":null,"perm":"n","evtype":"SET_PERMISSION","objid":null,"time":1611693764894,"objtype":null,"permusers":["slebras"],"user":"jayrbolton"}