Fix person bio

Weird overflow effect is weird
Add breadcrumbs

Probably best to wrap then in an ul, but too many style changes
Fix people without an image inherit the previously set one

Add a placeholder to motivate people to change the picture.
TODO: get a nice placeholder
Fix team list hover hank by forcing hardware acceleration
Tweak blog page

- move scripts to their own block.
- indentation
- remove obsolete </div>
Fix JS error form missing prev/next elements
Use update wagtail tags

Changed since v0.4
Fix oval blog post author images
Move f8/twitter scripts in the proper block
Merge branch 'page-fixes' into develop
Merge pull request #2 from zerolab/develop

Page fixes (renewed PR #1)