Add line length checking to flake8.

Throws warnings at 150 characters. Anything beyond that
in a python file is a bit over the top.

Also clean up the grants data a lot.
[bug 882923] Update opt-out for GA
Bug 481550 follow up: make alternate URLs fully qualified
[fix bug 914328] Add Firefox OS screenshots DE, HU, pt-BR
[Fix bug 913435] Formatting tweaks for Email newsletter recovery page
Merge pull request #1214 from alexgibson/bug-914328-add-firefox-os-screenshots

[fix bug 914328] Add Firefox OS screenshots DE, HU, pt-BR
Update logo on /firefox/unsupported pages
Bug 915867
Merge pull request #1236 from sgarrity/bug-915867-unsupported-logo-updated

Update logo on /firefox/unsupported pages for Bug 915867
Bug 832348: Redirect */index.html to */

This has caused problems in previous attempts.
I believe this version works correctly, but
check bug 906973 to make sure.
Merge pull request #1235 from kyoshino/bug-481550-canonical

Bug 481550 follow up: make alternate URLs fully qualified
Bug 867764 Translate newsletter names and descriptions

* On the /existing page, take the names and descriptions of the newsletters
  that come back from Basket and wrap them for translation before passing them
  to the template.  Some of these are translated already.
* Update the rewrite rule for /newsletter/existing to match all locales.
Merge pull request #1237 from pmclanahan/redirect-index-html-bug-832348

Bug 832348: Redirect */index.html to */
Fix JS compression issue.
Bug 900156: Enable locales for /newsletter/confirm/
Merge pull request #1238 from dpoirier/bug-867764-translate-newsletter-names

Bug 867764 Translate newsletter names and descriptions
Merge pull request #1239 from pmclanahan/newsletter-confirm-for-locales-900156

Bug 900156: Enable locales for /newsletter/confirm/
[bug 914328] Update Firefox OS Maps screenshots for DE, HU
Bug 892470: activate pluguncheck for hr and es-MX
Merge pull request #1242 from pascalchevrel/bug892470-plugincheck_actvate_locales

Bug 892470: activate pluguncheck for hr and es-MX
Merge pull request #1224 from alexgibson/bug-882923-update-opt-out-for-ga

[bug 882923] Update opt-out for GA