Issue #197:

- enabled rad functionalities on share archetype
- added basic Ole's sample for Aikau widget 
- added new configuration property to the AmpMojo to allow NOT including
/web resources in the AMP. This allows the -Pamp-to-war profile to
exclude /web from AMP packaging and load directly web resources from the
virtualWebapp Resources tag in context.xml (differently from Loader, if
you have web resources twice, the webapp one takes precedence)
- configured and tested amp-to-war to reload share web resources
- added
src/test/resources/alfresco/web-extension/share-config-custom.xml to
enable dev mode just in test