Reset send customstatus menuentry when contact reconnects

[steve-e]

[00:35:18] steve-e: I send custom status to a contact, he reconnects and now sees my global status
[00:35:49] steve-e: can we do something against that? 
[00:36:21] Asterix: steve-e: hmm no, custom status are reallt temporary
[00:36:38] Asterix: the only way woud be to re-send the custom status when he reconnects
[00:36:50] steve-e: or reset the menu item
[00:36:57] Asterix: but he will receive our real status before anyway
[00:37:23] steve-e: so it would be best to reset the menu entry so that one does not believe it is still set
[00:37:32] Asterix: it's not ?
[00:37:49] steve-e: nope
[00:37:49] Asterix: if it's not it's a bug indeed

[steve-e]

(In [8533]) Only show customstatus icon for contacts and reset on statuschange. Fixes #3381.