(maint) fix node report footer

Prior to this commit, when a node had more than 10 reports, the node
detail page would have a `nodes/report_table_tfoot` blurb rather than
actually rendering that partial view. This commit alters the call to
`render` so that the partial view is dereferenced and rendered.
Support for graph again (using jqplot)
Merge pull request #193 from jeffweiss/render_man

(maint) fix node report footer
Merge pull request #191 from fhrbek/rails3_graphs

Support for graph again (using jqplot)
(maint) allow running w/ RAILS_ENV=production

Prior to this commit, the rails 3 version of dashboard would not run in
production because of two problems:

 1. bundler didn't know to look for the haml gem outside the :assets
group
 2. the production config explicitly didn't serve static assets (like
images)

This commit adds the haml gem, already a dependency of the existing
haml-rails gem in the :assets group, but outside the :assets group for
availability after assets have been precompiled. This commit also allows
for serving static assets.
Merge pull request #194 from jeffweiss/production_consumption

(maint) allow running w/ `RAILS_ENV=production`