Change docs color theme for 0.8
New hardware provisioning doc, and updates to menus
More doc improvements + better warnings when you haven't built Spark
Update docs about HDFS versions
More updates, describing changes to recommended use of environment vars
and new Python stuff
Delete some code that was added back in a merge and print less info in
spark-daemon
Various web UI improvements:

- Use "fluid" layout that can expand to wide browser windows, instead of
  the old one's limit of 1200 px
- Remove unnecessary <hr> elements
- Switch back to Bootstrap's default theme and tweak progress bar colors
- Make headers more consistent between deploy and app UIs
- Replace some inline CSS with stylesheets
Print output from spark-daemon only when it fails to launch
Fixes suggested by Patrick
Another fix suggested by Patrick
Small tweak
Merge pull request #877 from mateiz/docs

Doc improvements for 0.8
Small fixes to README
Merge pull request #880 from mateiz/ui-tweaks

Various UI tweaks
Better docs
Add assmebly plug in links
Merge pull request #881 from pwendell/master

Extend QuickStart to include next steps
Merge pull request #883 from alig/master

Don't require the spark home environment variable to be set for standalone mode (change needed by SIMR)
Initial work to rename package to org.apache.spark
Small tweak to docs gradient