Remove popover content with .children().detach() instead of .empty() so it can be reused
Use .end() to remove extra line
consistently use <nav> instead of <div> for .navbar in docs
Fix #14411 by setting JSON Content-Type for Gist API request
grunt
Assume Element.getBoundingClientRect() exists; Fixes #14093

[skip validator]
Merge pull request #14244 from programcsharp/master

Remove popover content with .children().detach() instead of .empty()
Merge pull request #14406 from twbs/nav-tag-for-navbar

consistently use <nav> instead of <div> for .navbar in docs
Ukrainian site migrates to twbs.docs.org.ua
Merge pull request #14433 from KostyaTretyak/patch-1

Ukrainian site migrates on twbs.docs.org.ua