JBIDE-13048 : delete migrated features from site (jpa,jaxrs,jsf)

Signed-off-by: Fred Bricon <fbricon@gmail.com>
JBIDE-13048 : delete migrated plugins (jpa,jaxrs,jsf)

Signed-off-by: Fred Bricon <fbricon@gmail.com>
Remove unused imports

Signed-off-by: Fred Bricon <fbricon@gmail.com>
Fix failing tests when m2e-wtp-jsf is missing

Signed-off-by: Fred Bricon <fbricon@gmail.com>