Update Resources section for copyedits

Change-Id: I864bf35e86498da62dc5ad8b45e9da75de42b58d
Merge glossary from openstack-manuals

contains these changes:
O'Reilly Edits for the glossary
Use X-as-a-Service
XaaS in Glossary
Update Sahara (ex. Savanna) glossary term
Adds LBaaS overview to Networking intro
Lowercase compute node
Change command line to command-line
Typos in doc/glossary/glossary-terms.xml
Update glossary

Change-Id: I822b4218a4f373a9605759ec743687e650c45a69
Merge "Merge glossary from openstack-manuals"
Merge "Update Resources section for copyedits"