changed version number to 0.12.0
small clean up in injectable extension factory
removed unused icon
added new project page extending default project creation page
new project wizard will now set the generator after project is created
corrected bug in navigator when project is opened/closed
updated to version 0.13.0
updated code templates proposals, now using prettier icon
(wizards) moved needProgressMonitor/setWindowTitle calls into init
making NewFilePage a standard WizardPage instead of extending
WizardNewFileCreationPage
insignificant change to new package page
refactoring new bundle/network/task wizards
new file page now uses a "type" (bundle/network/task)
improved error message for new file wizard
new package page now also shows regular expression in message
added support for variables in properties (based on @esromneb's patch)
replaced Evaluator#getValue by IInstantiator#evaluate
Indeed, the evaluator must take into account that variables may have
their values overridden at instantiation. Now it does.
evaluator now evaluates the value of mapped variables
instantiation context now solves the values of variables
renamed CExpression to CxExpression