Socorro:Releases/2.4

The big change in this release was the system-wide switch from local time to UTC.

The release checklist was tracked in https://etherpad.mozilla.org/socorro-2-4-release-process

• crontab changes
  • newtcbs renamed to daily_matviews in bug 703310
    • changed on crash-stats-dev Fri Dec 30 08:32:40 PST 2011
    • stage: r26686
    • prod: r27084
  • remove cron_tcurl from crontab per bug 714141
    • changed on crash-stats-dev Tue Jan 3 10:16:22 PST 2012
    • stage: r26687
    • prod: r27085
  • remove following from crontab per bug 715343
    • cron_builds.sh
    • cron_hangreport.sh
    • cron_hbaseresubmit.sh
    • cron_signatures.sh
      • changed on crash-stats-dev Sat Jan 7 09:36:33 PST 2012
      • stage: r26688
      • prod: r27086

• config changes
  • turn off automatic session regeneration in session.php bug 702318
    • N/A on crash-stats-dev (session.php not overridden)
    • stage: r26876
    • prod: r27087
  • new property webserviceconfig.branch_model_cache_in_minutes bug 718056
    • changed on crash-stats-dev Fri Jan 13 15:14:25 PST 2012
    • stage: r27143
    • prod: r27143

• install `isodate` python module from http://pypi.python.org/pypi/isodate/0.4.4
  • installed manually using pypi2rpm on dev and stage
  • filed bug 716247 for permanent solution
    • done on prod

Found some issues in this release, tracked on https://etherpad.mozilla.org/24-upgrade-improvements for post-mortem discussion