Implementation of Content Search & Replace

Implementation of Content Search & Replace. 
When applied licence following [1] other modules files added licence info

[1]  https://github.com/Adobe-Consulting-Services/acs-aem-tools/blob/master/CONTRIBUTING.md
@Schikkeg "PR" is should for "Pull Request" .. I was just saying that your request should only change files that are required for it. In this case this code should NOT change (or even rely on) any part of Query Editor.

Usually you can configure to add the license header to new files you create (atleast thats what i do).