Jam 2.4.0 released

Bugs fixed:

• Cannot Reload Saved Gates . [found by rlongland]
• Path of Event Files and Logs . [found by rlongland]
• Cannot change event file after sort. [found by rlongland]

Feature/Changes:
Added dialog to display configuration read in from configuration files.
User configuration file read from user home then directory defined by jam.home.
Add a front end simulator so online sorting can be tested.
System.err and System.out calls replaced with logging API
* Significant code refactors to take advantage of generics