add gravatar to users index
fix popover html content render.
resize puppet calss form, parameter tab, left tabs size.
removed the need to add 'btn' class for the action_buttons helper, and changed the action buttons to small.
added search puppet class parameters.
Optimize SQL queries for puppetclass edit page
round_with_precision is deprecated

Use round instead of round_with_precision.

runtime used round but config_retrieval used round_with_precision. This resulted in the config retrieval value of my runtime chart being 0 all the time.
Upgrade to Rails 3.0.19 to mitigate CVE-2013-0156 and CVE-2013-0155
added API v2 placeholders.