Bootstrap 4 will use Sass. Do we care?

[TylerFisher]

http://blog.getbootstrap.com/2015/08/19/bootstrap-4-alpha/

We could:

• rip out the less compilation and replace it with libsass
• wait for the inevitable less fork of Bootstrap 4 and see if it is maintained well
• just keep using Bootstrap 3

I think option 1 is our best option. Shouldn't be too hard to replace the less stuff for sass, and if the Python bindings work then it can integrate better into our stack anyway.

[TylerFisher]

Bootstrap 4 is still in alpha. It'll be a while.