PDF Source fixes
Merge pull request #793 from yuzhay/PDFSource

PDF Source fixes
Fix for #634 Validate supercollection
Bug #794,#795,#796: New Layout Regressions and FireFox URL Fix
Merge pull request #810 from javierluraschi/Fix794to796

Bug #794,#795,#796: New Layout Regressions and FireFox URL Fix
Merge pull request #806 from ashsam/master

Fix for #634 - Validating Supercollection
Merge branch 'master' of https://github.com/alterm4nn/ChronoZoom into bugfix744_2