pom: Upgraded java version from 1.7 to 1.8. Closes #54
pom: Upgraded java version from 1.7 to 1.8. Closes #54

Also upgraded Java-common-libs from 2.0.0 to 3.0-SNAPSHOT

roalva1/opencga,j-coll/opencga,opencb/opencga,kalyanreddyemani/opencga,opencb/opencga,roalva1/opencga,j-coll/opencga,kalyanreddyemani/opencga,javild/opencga,javild/opencga,kalyanreddyemani/opencga,opencb/opencga,j-coll/opencga,javild/opencga,javild/opencga,opencb/opencga,j-coll/opencga,kalyanreddyemani/opencga,roalva1/opencga,roalva1/opencga,kalyanreddyemani/opencga,roalva1/opencga,javild/opencga,roalva1/opencga,opencb/opencga,kalyanreddyemani/opencga,j-coll/opencga,roalva1/opencga,j-coll/opencga,opencb/opencga,roalva1/opencga,roalva1/opencga,javild/opencga