JBIDE-18323 : support for .maven-repository marker

Signed-off-by: Fred Bricon <fbricon@gmail.com>
JBIDE-18485 Fix NPE when editing repo with missing releases or snapshots tag
JBIDE-18486 Change default values of releases and snapshots
JBIDE-18480 : use  parent pom version 4.3.0.Alpha1-SNAPSHOT

Signed-off-by: Fred Bricon <fbricon@gmail.com>
JBIDE-17998: Update root pom <name>