Remove Makefile section from .editorconfig

BS3 commit 51515e6791dd6cca8410a629bf21a1fcb427e5ee
use .pull-right to keep dropdowns aligned in example

BS3 commit 8cb1b766f8c3991fdc59140681378e733ea5c93a
remove lingering .nav-header

BS3 commit e953c23019ca8abd14e29eb03290ec6bbf5fedd9
align horizontal form label and input. remove lingering .nav-header

BS3 commits 14f688c7fc7fa6569d066320c62be02b17ca91dc,
e953c23019ca8abd14e29eb03290ec6bbf5fedd9