Moving common files to common directory
Switch topic-type names to Clark notation
Deleting files that accidentally got duplicated.
Fixing a bug in css path
Creating the essay topic type
Adding essay on namespaces
Multiple changes that should have been committed separatly
Tidy up some authoring css issues
Spelling fixes
Changing eppo generic topic namespace
Changing eppo tpd topic namespace
Changing eppo feature namespace
switching schemas to common namespace

Currently broken
trivial formatting change
Fixing bugs from namespace change -- still broken
Fixing stylesheet namespaces
Fixing namespaces
Fixing function ref namespace and making types work

Fixes the issue in which the templates and functions were not being
separated in the TOC
Fixing namespace for xslt ref
Fixing issue with strings in excerpts

Plus a bunch of other issues discovered while working on it.