Latest Isotope and onclick layout

[artitudinale1]

• Update to Isotope 3.0.1
• Adapt campers directive to new isotope version
• Implement expand campers on click
• Remove roll over effect

Closes #47 #39 maybe #2 (to test on actual mobile devices)

[artitudinale1]

Still need to work on this: fix css cos it ha broke in the attempt to rebase old PR don't disappear with rebase https://github.com/edx/edx-platform/wiki/How-to-Rebase-a-Pull-Request