Merge branch 'develop'
Merge branch 'develop'

* develop:
  NF: Using django-changuito, seemed to be the only viable cart package option for 1.7.  Had to specify github commit because pip version 0.7 is over a year old.
Merge branch 'develop'

* develop:
  Started cart app, and added about page.  Also removed staticfiles from .gitignore
  NF: Added QBP Faceted Search views.  Basic functionality is there.
  NF: Change search fields brand and category to faceted, which will allow for faceted search
  Forgot to add humanize to settings
  NF: Added currency filter
  Something weird going on with haystack search template and gitignore (git will not pick up new file qbppart_text.txt). Will rename it back to qbppart in next commit.
  NF: Change base links
  NF: Installed HayStack (and elastic search), created sample view
NF: Faceted search view mostly working now
NF: Default select option telling you how many facets there are
NF: Added "--All " option when one facet selected
NF: JS helper functions to remove & replace query strings
NF: "--- All" selection now removes facet query strings
BF: Some changes to search_indexes to get ordering to work, hopefully
NF: Correctly order facets now
NF: Improved pagination