refactor _blocks.scss for IE support
update _blocks.scss for IE compatibility
update owl-carousel script location to point to amazon bucket
update grunt build task to use select option

Now we can select type of build (local, live, staging) by typing "grunt
build" and then selecting the option from a list.

Added yes/no confirmation to build for staging and live
switch back to using config.rb for local build (remove config_local)
merge after pull from gh-pages