[fix bug 981542] Add callback to the new close button in door-hanger
Merge pull request #1765 from alexgibson/add-callback-to-close-australis-tour

[fix bug 981542] Add callback to the new close button in Australis Tour door-hanger menu
Fix Bug 981878 - Add Portland, San Francisco and Vancouver MozSpaces guidelines
Merge pull request #1769 from kyoshino/bug-981878-spaces-guidelines

Fix Bug 981878 - Add Portland, San Francisco and Vancouver MozSpaces guidelines
Fix CSS bugs on /firefox/os/. Bug 981953.
Merge pull request #1770 from jpetto/bug-981953-fxos-ie8-css-bugs

Fix CSS bugs on /firefox/os/. Bug 981953.