BHV-11123: modify ExpandableInput.js to be able to open only one ExpandableInput
update comments on inputBlur function
update comments according to comments standard
Merge pull request #1456 from enyojs/BHV-11123-SungbaeCho

BHV-11123: modify ExpandableInput.js to be able to open only one ExpandableInput
reviewed-by Krishna Rangarajan <krishna.rangarajan@lge.com>