Run `grunt`.
Update Blob.js to v2014-07-24.
Update FileSaver.js v2014-08-29.
Update less.js to v1.7.5.
Run `grunt`.

[ci skip]
fixes #13816 Modal dialog closes when dragging and releasing mouse button outside dialog
Merge pull request #14724 from twbs/fat-13816

fixes #13816 Modal dialog closes when dragging and releasing mouse button outside dialog
grunt