Added basic description and info for Orchestration.

Also included references to other guides and sections. Restructured a bit, using a 'Manage the OpenStack Environment' section, so that there aren't so many level-two headers in the CLI section.

Closes-Bug: #1267697

Change-Id: Ia717e2e8ef71154293a32dbfa7e80ebc8d00efda
Use a valid hostname to connect to MongoDB

After having changed the bind address of the MongoDB server the client
can't connect using the default host value (localhost). Use the
controller hostname instead of localhost to connect and create/setup the
ceilometer database.

Change-Id: If1a43889fdbe7bf0872ed8be07a111df4bc02714
backport: havana
Imported Translations from Transifex

Change-Id: Ia67097d964b62d2fef2b32d93b5988400bb27bfa
Merge "Use a valid hostname to connect to MongoDB"
Merge "Imported Translations from Transifex"
Merge "Added basic description and info for Orchestration."