Change repo_names to forge module repos

Prior to this commit, the rake tasks `job:import and
`job:import_if_sunday` only looked at the puppetlabs repositories
`puppet`, `hiera`, `puppetlabs-stdlib`, and `facter`. This commit makes
it look at a (dynamically generated) list of repositories for puppetlabs
forge modules.
Add regex check for getting repo_names
Add regex check for getting repo_names - for real this time
Merge branch 'master' of heroku.com:puppet-forge-metrics

Conflicts:
	Rakefile
Add module filter to sidebar
Remove duplication in module.erb and main.erb code

Prior to this commit, the main.erb page and module.erb had mostly
the same code, to display the same types of graphs. This commit
refacters the code so that main.erb uses module.erb as a partial,
removing duplication.
Add dynamic styles to sidebar

This commit adds styles to the sidebar such that the name of the module
you are currently viewing is highlighted.