make pull-right !important
move things around

Moved alerts, badges, button groups, buttons, carousel, close to
variables.less and customize.html
remove image description
Merge pull request #9091 from liuyl/docs

remove image description from docs
fixed small typo

its => belonging to it
it's => it is / it has
Merge pull request #9097 from trevorah/patch-1

fixed small typo
typo
Clean up mixins, fix #9100 (no ms-keyframes)

- Spacing tweaks in the general mixins
- Add comments to transform mixins about IE support
- Remove `-ms-keyframes` because only IE10+ supports it, and without
prefix
update modals demo code
more docs changes
Merge branch '3.0.0-wip' of github.com:twbs/bootstrap into 3.0.0-wip
Fixes #9073: add note to homepage about download differences
Fixes #9049: switch order of gradient mixin params to avoid problems for upgraders
Fixes #8786 (part 1): darken hover states on buttons
Fixes #8786 (part 2): new default button styles

Also relevant: http://www.youtube.com/watch?v=Ldyx3KHOFXw
Fixes #8770: mobile-first (stacked by default) horizontal dls
Update css.html

.help-block talks about being 'longer', but with .help-inline gone, it's not longer than anything and the comparison is confusing.
Merge pull request #9110 from chrisseaton/help-block-fix

Update css.html
More button updates

- Fixes #9113 (caret colors in dropdown buttons)
- Darken borders around buttons for contrast in button groups
Merge branch '3.0.0-wip' of github.com:twbs/bootstrap into 3.0.0-wip