fix(filter/task): handle followUpBeforeOrNotExistent proper

related to CAM-3080
chore(parent): use bom as parent of parent pom

related to #CAM-2998
chore(engine): use existing method for json serialization

related to #CAM-3080
chore(pom): add wildfly compatibility profile for resteasy 3.0.8.Final

related to #CAM-2749
fix(rest): set leading / of variable links by hand

- with resteasy 3.0.8.Final (wildfly) a / in a uri part
  is encoded as %2F, so we have to set it by hand and remove
  it form the uri part

related to #CAM-3039