Set Jekyll encoding and tweak Windows notes

BS3 commits: 00239f6034edce116634c9b11565704a19ab157b
indentation and page header changes

BS3 commits: 14975e4ee949a64413bde6d934d2198450c4478c
Getting Started: fix ID of heading so matches TOC

BS3 commits: 91c6419d0924dc36ad6599519c2afc53e6a33721
remove inaccurate comment

BS3 commits: 9039a5e90b980c61cf820e499d84e2a30de948b2
Remove popovers from components.html lead

BS3 commits: bb964b131ca3997e5a889743d0da06b94b612dd6
cleanup Gruntfile.js
add the 'Quick start' section
update docs to the latest BS3 style/layout
Update javascript.html to fix Tabs example

BS3 commits: bc074d54883de361f98429ab39b004ea89f3557a
branding