bug fixes to NS gui

git-svn-id: http://svn.code.sf.net/p/retroshare/code/trunk@7254 b45a01b8-16f6-495d-af2f-9b41ad6348cc
fixed bug in distant msg sending code causing crashes

git-svn-id: http://svn.code.sf.net/p/retroshare/code/trunk@7255 b45a01b8-16f6-495d-af2f-9b41ad6348cc