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
Feature Activation: Tour Authoring, Mobile Improvements, Credits Fix
Tours editor: fixing bugs with tours-related UI appearance
Merge and fix position of the message window
[BugFix #548]
Bugfix for #730
Merge pull request #827 from alterm4nn/exhibitcheck

Bugfix for #730
Authoring tests corrected
Merge pull request #817 from javierluraschi/ActivateTourAuthoring

Feature Activation: Tour Authoring, Mobile Improvements, Credits Fix
Merge pull request #822 from dvoits/toursEditor

Tours editor: fixing UI bugs
Merge pull request #824 from MichaelKalygin/bugfix548

[BugFix #548]
Bug #825: Visible profile icon and other fixes
Bug #811: Updated MSU logo and URL for footer
Bug #802: Breadcrumbs in header touches menu icons
Merge pull request #829 from javierluraschi/Fix825

Bug #825: Sign In button doubled