Replace links to projects.puppetlabs.com with links to tickets.puppetlabs.com

Remove links to projects.puppetlabs.com throughout Puppet and PE docs, as well as throughout puppet-docs readmes, to point at tickets.puppetlabs.com. And replace mentions of Redmine/wiki with references to JIRA. Also replace a few errant links to deprecated wiki pages with links to the appropriate docs.puppetlabs or otherwise page.