added model element for relation label values
added option to use JDT formatting
regenerated code with new model element and with JDT formatting turned
on
new model elements
-source label objects are no more mandatory
-changed Relationship#getTargetLabelValue to Relationship#getTargetLabel
to represent that there is an object returned
create command to rename those relation labels
respective bug #55
reformatted and refactored figures
respective bug #55
relationship factory does now generate a relationship without missing
labels
respective bug #55
relationship editpart does now have label children which are attached
dynamically
respective bug #55
added relationlabel model element as known model to generate the right
edit part
respective bug #55
add rename command policy for relation label
respective bug #55
The label is now represented by a new edit part which holds the model
label elements. Thus, it is now easy to implement the selection and
rename process.

respective bug #55
simple rename command for relation labels

respective bug #55
reformatted source code
changed #isAdapterForType() to check on the type's class for
equivalence!!
 
Currently, the type's instance was checked for equality with the
object's class.