Remove old -moz prefixed rules from viewer.css
Takes SMask's preblending in account
Remove caching of stream data and fix object loader for streams.
Bug 879161 - Fix pdf.js mimetype check.
Merge pull request #3450 from brendandahl/fix-mimetype-check

Bug 879161 - Fix pdf.js mimetype check.
Merge pull request #3441 from brendandahl/less-cache

Remove caching of stream data and fix object loader for streams.
Merge pull request #3406 from Snuffleupagus/remove-old-moz-prefixes

Remove old -moz prefixed rules from viewer.css
Merge pull request #3439 from yurydelendik/smask-preblend

Takes SMask's preblending in account