merged with earlier commits
[OverlayManager] Add preventDefault to the keydown event handler
Making sure we are not importing CRs and BOMs
Merge pull request #4833 from Koderok/openactionsupport

OpenAction support for printing
Merge pull request #4857 from yurydelendik/normtext

Making sure we are not importing CRs and BOMs
Updates l10n resources
Bug 1015115 - switch to cloneInto in pdf.js, r?yury
Add preprocessor directives for the extension; and refactor FirefoxCom callback
Merge pull request #4858 from yurydelendik/cloneInto

Bug 1015115 - switch to cloneInto in pdf.js
Merge pull request #4856 from Snuffleupagus/overlay-manager-keydown-preventDefault

[OverlayManager] Add preventDefault to the keydown event handler
Added more preferences variables for the available hash parameters