Also, makes little sense to say that Firefox sets a `-webkit`-prefixed value

Fixes #13548: Use position: absolute; to fix checkbox and radio line-height problems that were introduced after #13003

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Per:
* http://jsbin.com/purer/2/edit
* https://github.com/cvrebert/bs-css-hacks/blob/6e8aa78384a005b007fc45327c9516dcf6ec0f30/README.md#ios-temporal-input-line-height
Thanks @mdo <3

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Fixes #13066: Add z-index to the form control feedback icons so input groups don't render on top of them

Fixes #13098
Closes #13099

Fixes #13003: Move padding on radio and checkbox options from the surrounding div to the label to remove the no-click deadzone caused by negative margin

Ensures proper sizing and alignment of input groups within inline and
navbar forms.

* Uses `inline-table` on the input group
* Nukes the widths to `width: auto`—without this, the parent input
group doesn’t size correctly and functions as `display: table;` or
`block`

Fixes #12843: Scope label styles for horizontal forms to a media query so their narrow viewport display looks just like a normal form

Fixes #12669: Properly reset line-height on date inputs for all sizes; Fix IE8+'s misaslignment of text within date inputs

Also reorders the CSS to place Glyhpicons as a dependency before other components for fewer overrides and less specific CSS.

Thanks @Quy.

Fixes #12801: Add padding to the bottom of .form-control-static to match height of standard form controls

Fix #12359: Reset min-width on fieldsets so that they don't break responsive tables and behave more like standard block level elements