remove backdrop from proper element.

When a popover is displayed, a backdrop is appened to the popovers parent node.

We need to remove it from that node instead of assuming that node will be `document.body`
Minor derps
Merge pull request #187 from airtonix/patch-1

remove backdrop from proper element.
Building the js.
Merge branch 'master' into 2.0.0-wip
Removing old files
Removing active state on table views.
Removing active state on table views.
Font-weight on strong elements.
cleaning up examples
Removing fingerblaster from examples