update plugin.xml builds
fix pde hack plugin to get the last commit version of a project (instead of project directory last commit version)
add some java9 compatibility info in Manifest fles
fix build.properties of feature projects
enhance build.properties file tests
add python.core project
fix cqp init file crash if absent
fix Groovy build options
fix some import parameters
externalizing OSGI-INF messages
fix corpora view reload
fix imports in Groovy scripts
fix unclosed streams