rename welcome to getting started

BS3 commit 25b6df9
fix broken buttons on css docs

BS3 commit 88a4712
fix some broke buttons on the js page

BS3 commit d5e6bbb
rename welcome to getting started
Make the border-radius on input-groups to be overrides instead of resets on every size.

BS3 commit 9716b73
Make icons antialiased on Webkit browsers. Make the border-radius on input-groups to be overrides instead of resets on every size.

BS3 commits 4a03d45 and 9716b73