DOC-1281 Revised Puppet Server configuration.markdown

Revision + edits.
Squashed commits.
DOC-1289: Puppet Server known_issues page

A few small edits... nothing major here.
DOC-1281 Edited Puppet Server install_from_packages page

Revised the Puppet Server Install from Packages page.
DOC-1281: Puppet Server install_from_packages page

A few more edits.
DOC-1281: Puppet Server install_from_packages