Added a column that have a image as a cell value and display a popup on
hover of the of the image

A24group/Triage#3493
Merge remote-tracking branch 'upstream/master' into feature-image-hover-column-3493
Make the image custom for the image column

A24group/Triage#3493
Merge pull request #196 from A24Group/feature-image-hover-column-3493

Feature image hover column 3493