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
Changed everything to camelCase. Still using at param level like [1]. Hope it is ok. 
[1]  
url: $('body').data("post-url"),
            data: $.param({ search_element : $scope.searchElement,
                            search_path : $scope.searchPath,
                            search_string : $scope.searchString,
							replace_string : $scope.replaceString,
							search_component : $scope.searchComponent,
                           update_references: $scope.updateReferences
                          }),