Fix validation problems for compute-api

Running "xmllint --noent --noout --schema \
http://docs.rackspace.com/rackbook/wadl.xsd *.wadl", I noticed
a couple of errors that I fixed:
* Wrong URLs for docbook
* Missing declarations

Change-Id: Ia5b47c1010e498d16c4c406f49c0664984a5e123
Merge "Fix validation problems for compute-api"
Boot volume - add imageRef and bootable attributes

To create a bootable volume, you must include imageRef and bootable attributes

Partial-Bug: #1215147

Change-Id: I31a9b40d5da0281e6ea3fcdea59ee6989a454789
author: diane fleming
Merge "Boot volume - add imageRef and bootable attributes"
Fix whitespace problems in api-quick-start and api-ref

Remove extra whitespace

Change-Id: Ie5a552f315f2bc2ea2384ac69aa9627ff0b2efc5