docs.css: Remove border-color that's missing a value

BS3 commit 59ad7a9cf454a024ae0c9091d2e37f373181fb27
JS: update to latest BS3 build
Javascript - tooltips directions - easier visualization

BS3 commit af90282858daedfd226c71e7b678f93fa37cdd98
add responsive images section to docs

BS3 commit b0225c073a714c8172d6d59f9b21fc669f1cf747
add commas in a couple places

BS3 commit e9b1422e8614a8f1deac08941e84d93b1c1f7d5b
expand out IE for consistency w/ the rest of the page

BS3 commit d0a2a62cd774fca9fd2664e0eaf9b93377aa0dbf
apply <code> in a few places

BS3 commit 7bcee1acd2e0c96ffb8895f6b72505bc377c8ec1
fixes 8703

BS3 commit e5a7af36d5a67bb4c3dfa5cc3e9924c3c901d0d3
 CSS docs page: Use simpler HTML5 style for `multiple` boolean attribute of <select>

BS3 commit 70bd9b936fe02917def4b142ff2dacbb5526c6c6
expand grid system options table to include column widths, gutter widths, large desktop media query, and container widths

BS3 commit 774f173a18d93ba5e80d8c4c8207c8f961004da6
fixed 8715

BS3 commit edaeb338168e99548e94e59d2d8ed43b95144d7d
avoid ambiguous term "relative sizing"; clarify width vs. height control classes

BS3 commit 061535019c9b94745c95f4f8215a55bc59b11bdd
fix html5shiv & respond.js script links in docs

BS3 commit 3a50ce359602b90decf7d038692c28641bcee875
apply tooltip demo ordering change from 8730 to popovers too

BS3 commit b1a1210f071b696450f323f35b55b399a17d5396
Deleted unnecessary ID from modals example

BS3 commit 2acb0f40c058f6893e5bcf63b9cbdc3c9faeed4c
Deleted "show-grid" class from examples

BS3 commit 0bf5443ad79c6e708206d5c05baff1d3e253be9e
disable user-select for buttons

BS3 commit 08cd3072fc48d8b4ad7e9062cd5e9bbea1cc19da