Fix bug 867810 - update /features page content

* Changed "Personas" to "Themes"
* Changed "App Tabs" to "Pinned Tabs"
* Updated SuMo link for pinned tabs
Bug 867658 Update pager bullets for tshirt promo
Merge pull request #857 from sgarrity/bug-867658-android-promo

Bug 867658 Update pager bullets for tshirt promo
Small fixes for firefox/partners animations. Bug 866756.
Merge pull request #852 from jpetto/bug-866756-partners-animations

Small fixes for firefox/partners animations. Bug 866756.
Merge pull request #856 from craigcook/bug-867810-update-features-page

Fix bug 867810 - update /features page content
Update suggestions.txt
Merge pull request #862 from dad7732/patch-4

Update suggestions.txt
Firefox /firstrun A/B tests. Bug 865433.

- Abstracted simple footer from /firefox/new/

- Added L10n strings block to templates/base.html

- Fixed L10n comment case typo on /firefox/partners/index.html

- First crack at general modal JS (media/js/mozilla-modal.js)
Merge pull request #867 from mozilla/bug-865433-first-run

New /firefox/firstrun/ views
Merge branch 'master' of git://github.com/mozilla/bedrock
Recently modified images.