Bug 979909 - Update pdf.js to version 0.8.1114. r=Mossop

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rename : browser/extensions/pdfjs/components/PdfRedirector.js => browser/extensions/pdfjs/content/PdfRedirector.jsm
rename : browser/extensions/pdfjs/components/PdfStreamConverter.js => browser/extensions/pdfjs/content/PdfStreamConverter.jsm