style(web): set maximum height for mention menu;
style(web): set maximum height for mention menu;

EaglesoftZJ/actor-platform,ufosky-server/actor-platform,EaglesoftZJ/actor-platform,dfsilva/actor-platform,actorapp/actor-platform,dfsilva/actor-platform,EaglesoftZJ/actor-platform,ufosky-server/actor-platform,ufosky-server/actor-platform,EaglesoftZJ/actor-platform,actorapp/actor-platform,ufosky-server/actor-platform,ufosky-server/actor-platform,ufosky-server/actor-platform,actorapp/actor-platform,EaglesoftZJ/actor-platform,dfsilva/actor-platform,actorapp/actor-platform,dfsilva/actor-platform,dfsilva/actor-platform,ufosky-server/actor-platform,dfsilva/actor-platform,actorapp/actor-platform,EaglesoftZJ/actor-platform,actorapp/actor-platform,dfsilva/actor-platform,dfsilva/actor-platform,actorapp/actor-platform,actorapp/actor-platform,EaglesoftZJ/actor-platform,EaglesoftZJ/actor-platform,ufosky-server/actor-platform