Add draft relationships page.
Fix incorrect assumptions for JUJU_LOGGING_CONFIG
Fix broken link in authors-charm-writing.md

Also remove some superfluous slashes in a couple of other links.
Merge pull request #168 from AdamIsrael/fix-debug-environment-variable

Fix incorrect assumptions for JUJU_LOGGING_CONFIG
Merge pull request #169 from OddBloke/master

Fix broken link in authors-charm-writing.md
Adding stronger words around the requirements for configuration options.
Merge pull request #170 from mbruzek/master

Adding stronger words around the requirements for configuration options.
Initial refactoring of charm store submission doc with namespace focus.
Replace occurrences of user space with personal namespace
Merge pull request #171 from chuckbutler/submission_userspace_focus

Initial refactoring of charm store submission doc with namespace focus.
Merge pull request #166 from castrojo/relationships-docs

Add draft relationships page.