refactored email and sms gateways to make use of new alert (presenter) class
improve comment
Merge branch 'master' into 329_message_templating
fix some bugs with the new templating code, improve ERB error logging
start refactoring jabber gateway
fix (acknowledgement) duration passing bug
rearrange the check page a bit, improve some formatting
#329 and #291 - jabber gateway erb'ised and rollup aware, various other improvements
don't do rollup on pagerduty
exceptions in sending jabber alerts do not raise, just log error and continue
ERBise pagerduty messages, #329
clear up pagerduty details API code
Merge pull request #337 from ali-graham/336_api_change_pagerduty_details

clear up pagerduty details API code
Merge branch 'master' into 329_message_templating
add to_s method on alert
improve error handling, complete ERBisation of pagerduty messages
improve logging
fix specs
starting on adding summary (rollup) info to contact page
remove some duplicated code