click on nicklist in tabsrmm's chats should substitute a nick, not a user id

git-svn-id: http://svn.miranda-ng.org/main/trunk@7615 1316c22d-e87f-b044-9b9b-93d7a3e3ba9c
CVkChatUser::m_tszImage removed

git-svn-id: http://svn.miranda-ng.org/main/trunk@7616 1316c22d-e87f-b044-9b9b-93d7a3e3ba9c
oops 

git-svn-id: http://svn.miranda-ng.org/main/trunk@7617 1316c22d-e87f-b044-9b9b-93d7a3e3ba9c