Hidding the navigation breadcrumb if empty.
Shipping the remote content feature.

- requires the ajax feature from jQuery
- renamed src/img into src/dist; might avoid self-confusion on the fast this entire folder is copied to the root of the dist build
- updated the changelog
Adding grunt-concurrent to fasten the assembling process.
Merge pull request #42 from oncletom/home-news

Added Ajaxified News