Added CTRL+J shortcut support in JabRef with new Java and FXML files;…

… CTRL+J now appears in shortcut preferences

Added files initiating the function of a CTRL+J Input based on the Replace String Input Functionality.

CHANGELOG.md

@@ -12,10 +12,17 @@ Note that this project **does not** adhere to [Semantic Versioning](https://semv
 ### Added
 
 - Fork fix-for-issue-296
+The following new Java and FXML files added CTRL+J shortcut support in JabRef:
+- JumpSearchAction.java, JumpSearchView.java, JumpSearchViewModel.java
+- We added the JumpSearch.fxml File
+- We added the PreferencesService.java Class
 
 ### Changed
 
 - Updated the README and CHANGELOG files to better suit our project
+- CTRL+J now appears in shortcut preferences
+- We changed StandardActions.Java to include Jump Search (line 86)
+- We changed KeyBinding.java to include Jump Search (Line 103)
 
 
 ### Fixed