- Fixed AirMode popup so that it disappears when you click on "Help"
  or the Link, Image, or Video insert buttons.
- Fixed the link editor popup so that it disappears when you click on
  the edit icon.
Create summernote-th-TH.js
Merge pull request #601 from mrrtee/master

Create summernote-th-TH.js
Merge pull request #551 from garywiz/master
Merge branch 'garywiz-master'
Update dist file
Fix typo - closing tag
Allow any toolbar group can contain table creation button
Update years and fix typo in intro.js
Merged from upstream master