Rename: Master component is now 'vbrowser.vb2' i.s.o vb2.ui,etc.
New super class of Exceptions is VrsException.
Moved super type of Vl/Vrs Exception to vrs commons.
Cleanup of Exceptions: Changed Exception hierarchy. 
Also first two arguments of a contructor are reserved for 'message' and
'cause'. 
Optional extra arguments need to appended after default constructor
arguments to avoid confusion.
Moved VRS Data package to vrs.data subpackage.
Rename of data package and update to new Exception Hierachy.
Package renames and new Exception Hierarchy.
Package renames.
Disabled debug
Package renames.