Simplify docs build

Remove unnecessary old code from tools/build_docs.sh; it now only builds
docs for the current branch in the current working directory.

Fix the merging if the git log changes into changes.html.

Change-Id: I965dc3383b6317807ca0d47fe42648a19e96b57b
Fix typos in the configuration documentation

Change-Id: I0089c195f4cda313c3b68a7c5c215b9dbff94db2
Horizon front page test fix

Fixes the test string in horizon front page test so it is not failing
when header tag gets new attributes

Change-Id: Ibf62bf6f6300eeb0ab2f22086b0ff1c05c69d86b
Merge "Horizon front page test fix"
Merge "Fix typos in the configuration documentation"
Sort oslo libraries and add missing oslo.context

Ensure both lists of oslo libraries are sorted and
add the missing oslo.context in install_oslo method

Change-Id: I5b849c97b681e65425304e05534a61140e4e1fda
Document local.conf settings for ceilometer

Describe the various settings that can be made to control the
behavior of Ceilometer. Doing in lib/ceilometer for now. When there
is more something under doc may be warranted.

Change-Id: I9cd47085a5e91bae0a88f6e26f6c8bdc86c02978
Merge "Document local.conf settings for ceilometer"
Merge "Simplify docs build"
Merge branch 'master' into csr1kv_for_routing_kilo_minimal