(docs) fix broken link to puppet.conf documentation
(docs) Make curl examples use certificates

Since we're expecting a bunch of people to kick the environment cache directly
from the CLI, it makes sense to have the curl examples be as close to
copy-pasteable as we can get. Which isn't very close, since you need to sub in
paths to certificates and edit your config files, but this at least exposes the
correct options so people can skip reading the curl man page.
(docs) Add index.markdown page to make https://docs.puppetlabs.com/puppetserver/1.0 valid
(docs) Make page about "SSL server certificate change" display on docs site

This adds YAML frontmatter and adjusts Markdown formatting for compatibility.
Merge pull request #336 from nfagerlund/dec2014_docs_glitches

Dec2014 docs edits