Add identity pickers on event creation & join

Also it now saves current actor in localStorage and initalizes it in
Apollo Cache (just like user stuff). This allows not relying on
loggedPerson query anymore.

Signed-off-by: Thomas Citharel <tcit@tcit.fr>

js/src/constants.ts

@@ -2,5 +2,5 @@ export const AUTH_ACCESS_TOKEN = 'auth-access-token';
 export const AUTH_REFRESH_TOKEN = 'auth-refresh-token';
 export const AUTH_USER_ID = 'auth-user-id';
 export const AUTH_USER_EMAIL = 'auth-user-email';
-export const AUTH_USER_ACTOR = 'auth-user-actor';
+export const AUTH_USER_ACTOR_ID = 'auth-user-actor-id';
 export const AUTH_USER_ROLE = 'auth-user-role';