This changes the order of component variations throughout the repo (code and docs) to be more consistent.
The order now used everywhere is the one most frequently found in the repo before:
Default, Primary, Success, Info, Warning, Danger

- Implements new format "Copyright 2011-xxxx Twitter, Inc.", which resonates well with our History page and more accurately reflects the copyright status of the repo
- grunt dist to update all the files

http://caniuse.com/#search=grad

This divides banner from code.

Fixes #10620: remove gradient on buttons for IE9 in theme.less due to bleed through with rounded corners

Refactor panels to have a base class for improved flexibility when customizing (and no overriding to start, too)

New variable names were missing here and there.

* Adds new "theme" example
* Adds new theme.less file to provide all the overrides and additional
styles for the theme
* theme.less compiles, via Grunt, to two new files to `dist/css`,
bootstrap-theme.css and bootstrap-theme.min.css