fix #12154
fix #12007 by clarifying target of dropdown events
refactored and renamed grid mixins
fixed first element padding of list-inline
rm callout about creating .container-fluid-alikes now that .container-fluid has been added
Remove redundant :-moz-placeholder styles

No need for old Firefox versions support.
Allow the bootstrap package in npm to expose css and less
fixed two typos in carousel.less

carousel.less has two typos in glyphicon classnames. fixed them.
Docs: losslessly compress images.

Before: 25,1 KB (25.773 bytes)
After:  23,7 KB (24.352 bytes)
Compress examples screenshots with kraken.io.

Before: 1,12 MB (1.174.728 bytes)
After:  1,11 MB (1.173.614 bytes)
Sticky footers without any wrappers
possibly avoid some extra S3 charges

Refs https://github.com/boto/boto/issues/2078
add basic back to top link to docs sidenavs, fixes #12589
Merge pull request #12534 from Techwraith/patch-1

Allow the bootstrap package in npm to expose css and less
Merge pull request #12465 from XhmikosR/docs-img

Docs: losslessly compress images.
Added border radiuses to table when in a panel. Fixes #12461
Use license object instead of licenses array
Update grunt paths
Merge pull request #12612 from ZDroid/grunt-path

Update grunt paths
use Less' extend feature in btn-group-lg etc.