Update 0500_installing_admin_node.md

Standard MD "Note" format.
Update 1500_discovering_nodes.md

Standard MD note format.
Update documentation.md

Made live hypertext link.
Update localization.md

Re-wrote the topic to solve a few issues: a) created discrete steps; b) grammatical fixes; c) removed geek-boy snark in favor of a more professional tone. May still need to fix the code block rendering.
Update navigation.md

Grammatical edits.
Update navigation.md

More grammatical edits.
better home for this document
remove links to content that is automatically generated
Update devguide.md
improve descriptions on roles
improve error message if missing config
fix unit tests by allowing test jig to take over other jigs and then being tolerant of the resulting minor errors
remove log protections because I found root cause of issue (and fixed it)