fix a bit of xss, urlencode key and value in URL generator


git-svn-id: http://observium.org/svn/observer/trunk@4181 61d68cd4-352d-0410-923a-c4978735b2b8
Add eventlog for deleted ports.


git-svn-id: http://observium.org/svn/observer/trunk@4182 61d68cd4-352d-0410-923a-c4978735b2b8