Final rename of docs to User Guide and Operator Guide.

documentation/operator-guide/Makefile

documentation/operator-guide/conf.py

documentation/operator-guide/index.rst

documentation/operator-guide/intro.md

documentation/operator-guide/make.bat

documentation/operator-guide/operator-guide.rst

documentation/user-guide/Makefile

documentation/user-guide/conf.py

documentation/user-guide/downloading.rst

documentation/user-guide/index.rst

documentation/user-guide/intro.rst

documentation/user-guide/make.bat

documentation/user-guide/sample-requests.rst

documentation/user-guide/searching.rst

documentation/user-guide/viewing.rst

documentation/user-guide/web-client.rst