Update integration test to match queue url
Makefile updates: "make help" and more

- Add "make help" as the default makefile target.

- Add/rearrange a few makefile dependencies to avoid confusion.

- Split "resetdb" into separate "dropdb", "createdb", "migratedb"
  targets to allow easier automation of "createdb".

- Drop unused "update-submodules".  I don't know how they fit in here,
  and we'll probably do better if we never use submodules in the first
  place.

- Make "setup-git" purely optional, because local pre-commit hooks can
  sometimes be pretty obnoxious:

    $ git commit --amend
    sh: 1: node_modules/.bin/jshint: not found
Merge pull request #12 from dlitz/make-help

Makefile updates: "make help" and more
Initial Docker support

This gives us a simple, out-of-the-box setup process.  We build an
image, and people can deploy & configure it elsewhere.

See https://www.docker.io/ for general info.

It's still pretty new, but if you boot a modern Linux machine (e.g.
Debian sid), install docker.io with a recent kernel (~3.14), then run
"make docker-quickstart", you should get a nice localhost-only instance.

Run "make help" to see full help, and look at the Makefile to see how
this works.

Also, pull some samples out of the documentation so that we can
reference them.
Basic Vagrantfile
Correct include_patches behavior
Move repo.sync to fanout exchange
Gracefully handle missing repo in green_build
Optimize queries for project index
Update requests to 2.3.0
Various query optimizations
Ensure we dont try to save empty aggregate values
Correct subquery logic for getting latest builds
Change subquery to actually use parent relation (+tests)
fixed space font on build log
Decrease font size on build log
Improve job phase layout
kill fixed width on search
Maintain sorting on phase list
Improve UI when no logs available