Recommendation Tracker Code

Removed unnecessary Thread.sleep(...) call that I was using for debugging

SynchronizeTransactionUtilities:
== Fixed a problem with my recursion model for syncing Groups and Recommendations

CommentRefsTablePanel:
== Deleting a comment removes the reference from the Group/Recommendation and then marks the Comment element as "deleted".

SynchronizeClient:
== Now deletes elements if they are NOT referenced and sets the correct SyncResponseCode. It had been executing isReferenced(...) and only deleting if it returned true.

CommentTypeDAO:
== Now looks at both the application_id and the comment_id when checking references. It had been just looking at comment_id's which are not unique amongst Applications.

CommentHelper:
== Correctly checks if a comment is referenced from a Recommendation or a Group.

UpdateTransactionManager:
-- Removed a bunch of unused code.

set cursor position to 0 on fixType panel.
Added icon to the about dialog

removed some unneeded logging
allowed the References to not have files

Corrected typo in name of referenceIdColumns

Corrected typo in recommendation_id reference column name

RTClient.java - corrected bug that assumed code would not return a null String
SynchronizationManager.java - added code to make sure the data file is created
RTClientProperties.java - make sure the data dir exists.
GlobalUITools.java - make the errors appear always on top
AboutDialog - cleaned up about text

Included missing java class.

Updates to Sync process. Now commits and syncs changes. I haven't worked out all test cases and I am sure that complex sync cases will break everything. I still need to handle errors in a better way and deal with initialization errors within my SynchronizeTransactionManager and UpdateTransactionManager classes.