Bug 1088216 - docs: make the installation instructions easier to follow
Bug 1088216 - docs: make the installation instructions easier to follow

* Separates out the steps required for running the tests, from those for
  setting up a local instance.
* The running ingestion tasks step now explains what they are, that the
  API server must be running already, and how to ingest just a single
  revision for testing.
* The log parser compile step is moved inline, so it's harder to forget.

deathping1994/treeherder,glenn124f/treeherder,moijes12/treeherder,akhileshpillai/treeherder,akhileshpillai/treeherder,tojon/treeherder,avih/treeherder,jgraham/treeherder,tojonmz/treeherder,kapy2010/treeherder,kapy2010/treeherder,deathping1994/treeherder,sylvestre/treeherder,jgraham/treeherder,avih/treeherder,tojonmz/treeherder,rail/treeherder,vaishalitekale/treeherder,gbrmachado/treeherder,akhileshpillai/treeherder,glenn124f/treeherder,deathping1994/treeherder,wlach/treeherder,sylvestre/treeherder,wlach/treeherder,tojonmz/treeherder,moijes12/treeherder,deathping1994/treeherder,glenn124f/treeherder,akhileshpillai/treeherder,jgraham/treeherder,KWierso/treeherder,moijes12/treeherder,parkouss/treeherder,tojonmz/treeherder,KWierso/treeherder,kapy2010/treeherder,tojon/treeherder,jgraham/treeherder,KWierso/treeherder,moijes12/treeherder,gbrmachado/treeherder,adusca/treeherder,moijes12/treeherder,wlach/treeherder,deathping1994/treeherder,vaishalitekale/treeherder,vaishalitekale/treeherder,moijes12/treeherder,wlach/treeherder,adusca/treeherder,adusca/treeherder,edmorley/treeherder,edmorley/treeherder,avih/treeherder,adusca/treeherder,tojonmz/treeherder,gbrmachado/treeherder,sylvestre/treeherder,gbrmachado/treeherder,wlach/treeherder,avih/treeherder,rail/treeherder,edmorley/treeherder,adusca/treeherder,sylvestre/treeherder,sylvestre/treeherder,edmorley/treeherder,avih/treeherder,wlach/treeherder,vaishalitekale/treeherder,parkouss/treeherder,akhileshpillai/treeherder,gbrmachado/treeherder,parkouss/treeherder,rail/treeherder,rail/treeherder,glenn124f/treeherder,glenn124f/treeherder,deathping1994/treeherder,rail/treeherder,parkouss/treeherder,parkouss/treeherder,adusca/treeherder,vaishalitekale/treeherder,avih/treeherder,gbrmachado/treeherder,tojon/treeherder,vaishalitekale/treeherder,kapy2010/treeherder,jgraham/treeherder,tojon/treeherder,jgraham/treeherder,tojonmz/treeherder,rail/treeherder,akhileshpillai/treeherder,kapy2010/treeherder,glenn124f/treeherder,KWierso/treeherder,parkouss/treeherder,sylvestre/treeherder