wrap agile_exception.jar into robusta.jar's lib folder

add menu for user to enable Robustness Level

add a class to copy agile_exception.jar into user's project for the menu above
renamed EnableRLAnnotation.java
refactored so that version number is not hardcoded for Robusta.jar and agileException.jar
Merge branch 'master' of https://github.com/NTUTLAB1321Robusta/Robusta