Sign the addon

[gjedeer]

After updating firefox, it refuses to run Perspectives because the addon is unsigned

https://support.mozilla.org/en-US/kb/add-on-signing-in-firefox?as=u&utm_source=inproduct#w_what-can-i-do-if-firefox-disables-an-installed-add-on

https://developer.mozilla.org/en-US/Add-ons/Distribution

[mwgamera]

https://addons.mozilla.org/en-US/firefox/addon/perspectives/versions/#version-4.6.1-signed

[daveschaefer]

Hey, yes, this is blocked because of #59 , which is preventing AMO from giving us a "full review" and blessing our uploads. I am actively working on it right now, and once it's uploaded the signing will continue. Sorry about the delay.