0.8.2, upgrade to ES 0.90.0, capture improvements, minor UI cleanup

  - Install ES 0.90
  - fixed dropped packet stats
  - netflow plugin (issue #27)
  - memory capture improvements
  - record capture memory in stats
  - record filesize for offline pcap
  - remove port from http host header (issue #63)
  - db.pl prints more info by default,  multiple -v even more
    information, and new info command
  - fixed viewer crashes if pcap can't be read (issue #67)
  - minor css cleanup
  - Display CERT info in session view