simplify mongo query by using $setOnInsert, requires mongo 2.6
release 3.2
add back all required common packages
only publish alerts to topic
only publish alerts to topic (2)
publish alerts to aws sns topic
tweak default file configs
add redirect from docroot
add boto to install packages
Revert "simplify mongo query by using $setOnInsert, requires mongo 2.6"

This reverts commit 2df1b043b63957c2fe3da7fc95809158a55af20a.
improve sns error handling
improve mq send logging
add support for MongoDB ReplicaSets
replace CONF with settings
minor fixes
Merge pull request #64 from guardian/feature/settings

Replace CONF module with settings file
server daemon renamed to alertad
notifcation plug-ins
do not try to load disabled plug-in
fix amqp and sns plug-ins