Merge remote-tracking branch 'upstream/feature/talks'
integrate talks with repository, use local js files for pdf.js

Signed-off-by: Chris Sherry <chris@chrissherry.co.uk>
add .js files to scripts folder

Signed-off-by: Chris Sherry <chris@chrissherry.co.uk>
talks page layout changes

Signed-off-by: Chris Sherry <chris@chrissherry.co.uk>
Merge pull request #32 from christiansherry/master

Working video/pdf scripts for displaying talks