[bug 1055520] Update to ElasticUtils v0.10

This updates elasticutils to v0.10 which should work with both
Elasticsearch 0.90 and 1.0.
Merge pull request #330 from willkg/elasticutils-update

[bug 1055520] Update to ElasticUtils v0.10
[bug 1055520] Fix two reshape issues post EU 0.10 update

* MLT returns results that have values which are arrays--so we need
  to reshape those
* the spam duplicates report uses .values_dict() and we need to
  reshape those
[bug 1055785] Codify data retention policy

This adds the data retention policy to the About page.

It also nixes the mobile template for the About page which wasn't
very functional.

It also adds text and links which are already in the footer, but this
surfaces them so that the About page is "complete" in terms of the
site's policies.
Generalize About page text so it works for all products
Merge pull request #331 from willkg/1055785-data-retention

[bug 1055785] Codify data retention policy
[bug 1053863] Update django to 1.5.9
Merge pull request #332 from willkg/django-update

[bug 1053863] Update django to 1.5.9
[bug 1055788] Implement data purging

This implements the data retention policy from bug #946456:

* delete feedback_responseemail records older than 6 months
* delete feedback_responsecontext records older than 6 months

It tries to do the work in bulk so as to minimize the db traffic but
I'm pretty sure the .delete() is doing dumb things like getting a list
of ids then deleting the rows in chunks. I look forward to updating to
Django 1.6 and seeing if it still happens like that.
Merge pull request #333 from willkg/1055788-cron-job

[bug 1055788] Implement data purging
[bug 965796] Add a products update page

Takes the /analytics/products page and uses a class based view to show a page
where you can add products or modify their properties.
Merge pull request #323 from iankronquist:965796-product-management

[bug 965796] Add a products update page
[bug 1057353] Update django-statsd and pystatsd

This updates django-statsd to 0.3.8.5 and pystatsd to v2.0.3 which is
the same versions that kitsune is using.
Merge pull request #334 from willkg/1057353-update-statsd

[bug 1057353] Update django-statsd and pystatsd
Enhance product view

* fix the layout so it has the analyzer navbar on the left
* switch the form to use .as_p() which makes it a tiny bit easier to use
* tweak the view code so that it makes it easier to update existing
  products
* add some "helpful" directions so it's a little clearer as to what's
  going on
Merge pull request #335 from willkg/enhance-products-view

Enhance product view
Add PII-related notes to the API fields
[bug 799562] Clarify API field documentation

* adds max lengths where appropriate
* adds note about including PII-related informational text for
  description and email fields
* adds max_length items to manufacturer and device fields in the
  serializer
[bug 1055789] Restrict front page dashboard and api to 6 months
Merge pull request #336 from willkg/1055789-restrict-dashboard

[bug 1055789] Restrict front page dashboard and api to 6 months