Handle cases where there is no log_file_depot

Also handle when the log_file_depot may be on the zone instead of the server.
Also handle when @record is nil after clicking on a server.
https://bugzilla.redhat.com/show_bug.cgi?id=965889
Merge pull request #3 from brandondunne/support_case_alert_box_changes

Handle cases where there is no log_file_depot