Start of 0.11.2, Cron Queries feature, regex improvements

  - New experimental "Cron Queries" feature
    * ONE and ONLY one viewer should have "cronQueries=true"
    * New [moloch-clusters] config section to send sessions
      from one cluster to another
  - Doubled the number of sockets from viewer to ES, now 20
  - Regex and wildcard support for file expression
  - Regex is stricter about back slashing (issue #281)
  - Cache user lookups for 5 seconds