Support for hovering on cell's with state 

If parent row are hovered, child cell with state should react to this.
Add tooltip `viewport` option, respect bounds of the viewport
Update JSZip to v2.2.0.
Update time-grunt to v0.3.1.
Merge pull request #12328 from benogle/bo-tooltip-adjust

Add tooltip `viewport` option, respect bounds of the viewport
Switch to `icon` instead of `shortcut icon` to fix the HTML validation tests.
Update QUnit to v1.14.0.
tests/index.html: add missing `meta charset`.
tests/index.html: re-indent.
Fix popover when using append.
Add test for popover.
Fix #13138: use underscore prefix to ignore directories
Add `homepage` Bower property
Merge pull request #13168 from ZDroid/homep

Add `homepage` Bower property
Merge pull request #13167 from ZDroid/underscore

Fix #13138: use underscore prefix to ignore directories
Fixes #13079: Scope .open class in button variant mixin to immediate children
Merge branch 'master' of github.com:twbs/bootstrap
grunt
Fixes #13158: add link to nonresponsive docs in the example
fixes #9461 - Make carousel ignore non-items in carousel-inner