New data file for just speakers
Remove speakers from _config and fix deprecated flags
Update templates to pull from new _data file
Update listing pages to look at _data speakers entries
Move all speaker templates to use slug to stop namespace clash
Move configs into seperate files and improve layout
Update files to use new config layout
Merge branch 'feature/issue-95-split-config-data-into-more-manageable-files' into develop
Move to text based logo (draft)
Start Move to 2015 config
Update to have no date in logo header
Update post-conf holding
update 2015 launch navigation
add all speakers to archive list
Fix video listing to show speaker details in new format
Change intro copy and footer
Fresh content for 2015
Add contact to top nav
Remove commented header
Improve CTA links for speak