This is the patch described here:
https://github.com/twitter/bootstrap/issues/271592189b87ad
That commit has not been upstreamed to bootstrap due to bureaucracy issues.
(imported from commit 3c4a109b58f403569a41f5048ab347a800f029c2)
We now don't use these at all, and they are likely to confuse us later e.g.
when modifying third-party files.
(imported from commit 2034949111466b22b1830ec087f30fa34445fcbd)
Some time between the 2.0.4 and the 2.1.0 upgrade, Bootstrap broke in
a way such that clicking on a dropdown did not cause it to close.
Here's the bug thread about it:
https://github.com/twitter/bootstrap/issues/4497
I've implemented this workaround discussed there, though the bug is
fixed in 2.1.1, so when we upgrade this will go away (which is why I
only reluctantly tag it 'third', since the diff will not need to be
carried forward.)
(imported from commit f8d9cf65b33306a426d864c9b503bb3446614111)