Changed last-child to first-child
As noted by @jerem the first child will actually be the last shown
replace js scrollspy test for default behavior
Revert "Temporarily revert README deletions from #13470,"

This reverts commit 54284a13c6b503d925bf6f75db2830f1af7fcf98.
Update cover.css

Moved the inset box-shadow to .site-wrapper in order to keep the shadow at the edges even if content exceeds viewport and needs scrolling.
add "focus" to focused btns with button plugin
Allow tabs to fade in if no initially active pane is present; fixes #13814
Add a few more cases to the visual test tab page
assign background to row of .table-striped

if background is not set on row, striping doesn't work properly in responsive tables where row and cells are set to  display: block.
removing redundant background declarations on TDs
Added @gray-base variable to make @gray-{shade} reference, also allows @gray-base to be modified with less#modifyVars and the vars to cascade
Fixed @gray-base value being once space short
fixes #13912: make radios/checkboxes work with inline forms again
Merge branch 'master' of github.com:twbs/bootstrap

Conflicts:
	dist/css/bootstrap.css.map
	dist/css/bootstrap.min.css
	docs/dist/css/bootstrap.css.map
	docs/dist/css/bootstrap.min.css
Mozilla bug says the fix targeted v31
Merge pull request #13905 from Jimtrim/patch-1

Update cover.css
grunt
Merge pull request #13574 from twbs/reinstate-13470

Delete redundant Grunt info in README (Merge before shipping)
grunt
Merge branch 'master' of github.com:twbs/bootstrap
Remove "pointer" cursor on disabled list-group-item