Fixed flickering and simplified calculations

- Removed offending line causing a flicker to the default top state
- Simplified calculation of the top offset when in the bottom state
Support for hovering on cell's with state 

If parent row are hovered, child cell with state should react to this.
Add Bower package description
fixes #9855
build
Merge pull request #13086 from twbs/fat-fix-12983

Fat fix 12983
Break up docs into includes
Merge branch 'master' of github.com:twbs/bootstrap

Conflicts:
	dist/js/bootstrap.min.js
	docs/dist/js/bootstrap.min.js
Rename and organize nav partials for cleaner file structure
correct event naming of `scroll` and `load' event

closes #12337
Fix #12375: stop using document.body.scrollTop as it's deprecated in the strict mode

Closes #12377
Merge pull request #12862 from sultano/patch-1

Fixed flickering and simplified calculations
Fix #12845 - Modal#hide should only be called with an event argument

Closes #12850
Merge branch 'hnrch02-modal-toggle'
move sauce_browsers.yml into /grunt/; fixes #13065
Merge branch 'master' of github.com:twbs/bootstrap
Update gruntfile to point to new customizer nav, run grunt
grunt
use @ssorallen's blob support test in customizer; fixes #12617
regenerate customize.min.js