ngGrid Custom Footer

Creating a nggrid custom footer with bootstrap controls.
Removing classes for label and label-padding from app.less.

Notes:
I put the ngGrid.custom.footer template in the app/components/ngGrid folder. Please let me know if you'd like me to move it.

I left the original ngGrid footer commented out in the template as a reference for the time being and I will remove it once we're happy with the footer as it is.

Leaving the pages at 10 to test paging functions for the time being.
Let's drop selected items for now. There is actually an issue with it across pages. Nice to have it eventually but I think we'll punt for now.