delete icons in assets

BS3 commit 879d517cb353857e59b16cc7e8310ca4350ef99f
update javascript to latest BS3
use collapse in dropdown js example. remove glyphicons from compiled css.  popover carets fully functional in ie8 holy carp wtfbqq. prevent some table bullshit on input groups. Fixed mixin btn-pseudo-state background for [disabled] buttons. adds css for extra tooltip placement options. Overall responsive `img` styles. Nuke hella things

BS3 commits 94761c221648c0968328bee1fc5970ad7b481bea
81b5e74057da4a891419083f343b15090162e801,
ca8ca2177fd5b8e6523bd1599784b129c2d75937,
d9a662ed1dbe3dbfe30980d45c831e3b454bff86,
69b7c5a2af6656fa2502ff4ea9c2a22e0d9d889a,
88ece4fc5902f7dd9582fb4e5956062fe97af84c,
09cdee2f03aaad5c5a767fbec2e3896ad3d1f980,
0a92efce0cbded7b664a5e198bfe6bca3b13bcac
add docs callout for glyphicons on homepage and CSS page. update close button example display

BS3 commits 8cd5d0be71f51a857848b6c28b3f97dbbb838dee and
8e6d5be8e495dfcf8e2f46d2f40e6ff82e0eb987
Fixed mixin btn-pseudo-state background for [disabled] buttons. Nuke hella things

BS3 commits 69b7c5a2af6656fa2502ff4ea9c2a22e0d9d889a and
0a92efce0cbded7b664a5e198bfe6bca3b13bcac
use collapse in dropdown js example. fix broke js markup

S3 commits cb29ed07518402c2f3ad9fbf71ed1297846727b2,
94761c221648c0968328bee1fc5970ad7b481bea, and
416cc6b2eeb94287e45539d834b37846f3913e70
remove icons from sidenav. remove glyphicons from demo component. BS3: Remove Glyphicons

BS3 commits e5a9a1f5ff12bd0aa0159db4f12f46dcadf08456,
cb29ed07518402c2f3ad9fbf71ed1297846727b2,
2981f0089f917deb39a6dd61a784c01aa2732e92, and
2af67238a4ce5e85e1ba9c83d3af3b0c13f811cd
add docs callout for glyphicons on homepage and CSS page

BS3 commit 8cd5d0be71f51a857848b6c28b3f97dbbb838dee
Fix #8287. add docs callout for glyphicons on homepage and CSS page

BS3 commits cb29ed07518402c2f3ad9fbf71ed1297846727b2 and
8cd5d0be71f51a857848b6c28b3f97dbbb838dee