Add locmem cache for l10n use.

Add statsd instrumentation to locmem cache backend.
Alter version_re to match beta to fix bug 984168
Bug 983057 - Improve l10n in template _notes_sidebar for Firefox OS release notes
Update the SSL-enabled product list for Firefox 28 (No bug)
Bug 976976 - Update Binary Components rationale to cover existing practice. r=emk.
Redirect to beta releasenotes to fix Bug 983348

Refactor get_release_or_404 out of release_notes and
use it to determine if search for beta fallback should
occur, and redirect to public beta version if found

Also use get_release_or_404 in system_requirements so that
it now respects the is_public flag
Merge pull request #1792 from jgmize/beta-redirect

Redirect to beta releasenotes to fix Bug 983348
Merge pull request #1786 from jgmize/version_re-beta

Alter version_re to match beta to fix bug 984168
Merge pull request #1775 from flodolo/bug983057_relnotes

Bug 983057 - Improve l10n in template _notes_sidebar for Firefox OS release notes
Merge pull request #1356 from pmclanahan/use-locmem-cache-for-l10n

Add locmem cache for l10n use.
Merge pull request #1791 from kyoshino/firefox-28-ssl

Update the SSL-enabled product list for Firefox 28 (No bug)
Bug 985067 remove link to Berlin spaces page
Merge pull request #1798 from retornam/fixberlin

Bug 985067 remove link to Berlin spaces page
Up l10n cache limit to 5000 entries.
[fix bug 984499] Update Sandstone Less mixins for CSS gradients
Merge pull request #1796 from jpetto/bug-984609-post-mwc-fx-partners-updates

Update /firefox/partners post MWC. Bug 984609.
Merge pull request #1794 from gerv/master

Bug 976976 - Update Binary Components rationale to cover existing practice.
Merge pull request #1795 from alexgibson/bug-984499-update-mixins-css-gradients

[fix bug 984499] Update Sandstone Less mixins for CSS gradients
Bug 985449 - Enable hsb (Upper Sorbian) in Bedrock
bug 978988 - Release notes templates

For Aurora, Beta, ESR, and OS (stub)