Introduce Feb19 software tweaks (schemaorg#2146)

* 1st pass

* First pass at a vocab independant version

* fix to canonical url

* Tweaks and additions to get full.html etc. working

* Fixed Enumeration disply
Suppress output of properties table when there are no properties to display

* Disssable morinfo block

* Temp bypass examples load

* Fix to table layout on term pages

* First pass at configurable data load:
  * Removed dependancy on the Unit class (code still in there)
  * Added CONFIGFILE to pull term definitions, examples, docs, and templates from local/remote locations

* added exampl config files

* Added SUBDOMAINS variable to .yamls.  If set to False will suppress extention terms
being referenced by subdomain urls eg. bib.schema.org/Audiobook.

Only remaining subdomain pages being the extention home pages.

* Final adjustments following datacommons tests

* Tweeks to match schemaorg/datacommons requirements.

* Tweaks around vocabUri to ensure correct RDFa in pages.

* Tweak

* Added include file funtionality to config files
Now handle local locations such as '.' or './' in config file loads

* Added missing rdfas and example.txts to config

* Synchronise .yamls
Add build termconfig script

.gitignore

@@ -8,3 +8,4 @@
 /scripts/rspec-failures.txt
 /rspec-failures.txt
 /admin/deploy_timestamp.txt
+/datacoms