Don't load AddonManager.jsm, if there is lasy getter
(see chrome://browser/content/browser.js)
Fix not defined variable
(introduced in b35f60be0a364bf9a4bf783df3862339846b500d commit)
Bump version to 0.1.2.1 - 2014-02-21
Bump version to 0.1.4.1 - 2014-02-21
Install page for v. 0.1.2.1 - 2014-02-21
Install page for v. 0.1.4.1 - 2014-02-21