pom: format pom, add versions so that mvn warnings go away
pom: format pom, add versions so that mvn warnings go away

joprice/factorie,melisabok/factorie,malcolmgreaves/factorie,strubell/factorie,Craigacp/factorie,hlin117/factorie,patverga/factorie,asubbaswamy/factorie,factorie/factorie,pogren-oracle/factorie,digitalreasoning/factorie-scala-210,zxsted/factorie