Fixed single btn in btn-group-veritcal not being rounded
Fixes #11669 - Adds smooth modal scrolling on iOS by default
Don't exclude fonts from bower installs

Excluding fonts/ from bower installs causes glyphicons to be
unavailable to projects using development Bootstrap LESS files.
Drop redundant module import
hide space characters in input-group-btn to fix segmented buttons double border
Improve pager customization
Clarify number of columns in nested grid
Fixes #11795: Update the contributing guidelines to include some more CSS guidelines
Fixes #11783: Document requirement of .container(-fluid) in navbars
Merge pull request #11840 from ZDroid/pagination-boom

Improve pager customization
typo
Merge branch 'master' of github.com:twbs/bootstrap
Merge pull request #11732 from dak/include-dev-fonts-in-bower

Don't exclude fonts from bower installs
Merge branch 'master' into pr/11776

Conflicts:
	package.json
Merge branch 'master' into pr/11676

Conflicts:
	less/modals.less
run grunt on modal scrolling change
revert an earlier change to move the component-animations.less file because it fubared modal backdrop .fade usage
Merge branch 'master' of github.com:twbs/bootstrap
Fixes #11660: Depcreate small and .small in blockquote in favor of footer
Merge pull request #11494 from blowsie/patch-2

Fixed single dropdown-toggle in btn-group-veritcal not being rounded