* split out sections into their own documents
* defined typeface conventions and applied them some existing
  documents
* finished writing/documenting/testing tutorial hash crunch script
* split out first crunch script into a standalone runnable python file
Merge remote-tracking branch 'origin' into 1495-crunch-documentation
 * Mostly done on "Debug a Crunch Script"
Reorganization, added parallel jobs and new pipeline tutorial.
Reorganized user manual into sections
* Fixed links
* Added bootstrap and jquery snapshots
Fix some typos and long lines
Working on traits document
* Almost done with trait search tutorial
* Working on GATK tutorial
* Added section on putting directories into Keep
* Finished trait search tutorial
* Finished GATK tutorial
* Noted that arv ls -s print size in kilobytes
* Fixed template so subsections only show up in userguide
* Removed obsolete tutorial files
* Copy edits
* mailto:arvados@clinicalfuture.com is now arvados@curoverse.com
* git clone in install guide now clones from github
Merge branch '1495-crunch-documentation'