Document caret /cc 10102

BS3 commits: 12fa502e67df45d27e151fd51b5a497489232626
finish grid docs intro for now; needs work though

BS3 commits: 49f177fe6034c00242705a2f02b29758aaf96879
remove screen from all docs media queries

BS3 commits: ef2e0c99f4c5958eb16a401b73a39465a301a484
mention .small in docs /cc 10102

BS3 commits: be1f0b07f3b8d0b78a7e07f624f111c02789c2b6
another grid .row mention

BS3 commits: 727a91de1cdf5cbc4f25528e073480332a5940c5
mention .dropdown-backdrop and .open in dropdown docs /cc 10102

BS3 commits: 6fa9037e1c37759bdf446e83926b12073c3cddf3
mention .modal-open and .modal-backdrop in docs /cc 10102

BS3 commits: edca93b8c71829cbe09055e048a31b54ec19eb5b
mention tooltip markup in docs per 10102

BS3 commits: fd293be5a17aa71128beb1a2152f8eb05107e21c
mention .invisible in docs per 10102

BS3 commits: 2d1fa8cb5bdb61043b1abad5497ce2c74764106e
add docs example for 10938 to show responsive column clearing in grid

BS3 commits: ed12d41caed288b47f1f225115503d3086d69e6a
follow up to 10102

BS3 commits: bf4c7148513920f25a5c086fdf2091d06683f2ce
docs notice for 11010

BS3 commits: ee4a1ea295a363c040de21d728dab9848f26461f
fix 10257

BS3 commits: f946ff5d254d0d8383200101f19b64bcd8ba2c58
scope top padding of .form-control-static to be within horizontal forms only; fixes 10927

BS3 commits: be4e951b7dc254dac08a5d2c6b88be0cda6e420f
Restore grid mixins

BS3 commits: a43696467f4bb4ae1abae82453a1a543894d6766
Jumbotron: remove the hard-coded font-size from jumbotron.less and moved...

BS3 commits: 36b4639b0da23574faa3373d1d50c47178db7044
run grunt

BS3 commits: 9da73d79c220280928dcd68dbd43a56d94a1ab85
Nicer docs license name

BS3 commits: 810a852f4a2725da9a8990774714e8fce4c93cb1
fix 11003

BS3 commits: f0f1b8319dcdc894f49c51e3678082dc15987516
use CDN for respond.js

BS3 commits: c5da0597bcd0d2bd1daddd3a0f784b8a5e8e1a44