[fix bug 1029829][fix bug 1029838][bug 1081917] Thunderbird RNA

* Created releasenotes bedrock app
* Migrated firefox release notes views to releasenotes app.
* Added thunderbird releasenotes urls
* Added global.conf RewriteRules for Thunderbird release notes.
* Thunderbird base, release notes, system requirements templates
Remove TOS from homepage: fix bug 1094221

Restore pre-fx10 Webmaker and Appmaker promo tiles
Tweak position of Webmaker logo
Bug 1097399: Update legal-docs submodule.
Merge pull request #2487 from pmclanahan/update-legal-docs-1097399

Bug 1097399: Update legal-docs submodule.
Merge pull request #2449 from jgmize/rm-TOS-content-from-hp

Remove TOS content from homepage: fix bug 1094221
Fix Bug 1095548 - Hacks embedable newsletter form not hiding "thank you" message
Merge pull request #2364 from glogiotatidis/thunderbird-rna

Thunderbird RNA.
Fix Bug 1093985 - https://www.firefox.com/hello/ does not contain Hello content

Add a temp redirect to the SUMO article.
Fix Bug 973965 - Copy fix for mozilla.org/gigabit
Bug 1098254 - Add JSONLint to gruntfile, fix JSLint warnings and add .idea to .gitignore

introduce .idea folder in gitignore for those who edit in jetrains IDEs

enhance grunt usage + use of JSONLint tool to validate JSON files

unused parameters + unneeded comma + filter loop from enumerables inherited properties

enhancements to gruntfile suggested by Alex Gibson

fix code style
Merge pull request #2462 from MathRobin/master

Enhancements to the JS part + enhance gruntfile + ignore Jetbrains IDE config folder
Merge pull request #2493 from kyoshino/bug-973965-gigabit-copy

Fix Bug 973965 - Copy fix for mozilla.org/gigabit
Fix Bug 1098293 - Embed contribute form broken
Merge pull request #2488 from kyoshino/bug-1095548-hacks-newsletter-form

Fix Bug 1095548 - Hacks embedable newsletter form not hiding "thank you" message
Merge pull request #2495 from kyoshino/bug-1098293-contribute-embed

Fix Bug 1098293 - Embed contribute form broken
[bug 1087053] Refresh MozID - 2014-11-10
Merge pull request #2490 from ckprice/bug-1087053-refresh-mozid

[bug 1087053] Refresh MozID - 2014-11-10
Merge pull request #2492 from kyoshino/bug-1093985-hello-temp-redirect

Fix Bug 1093985 - https://www.firefox.com/hello/ does not contain Hello content
Hide related videos when Fx anniversary video completes.
Bug 1098483.
Merge pull request #2497 from jpetto/bug-1098483-fx-anniversary-remove-related-videos

Hide related videos when Fx anniversary video completes.