10151
SignPortal: changed loadLevel to levelExists
Merge branch 'dev' into NetherPortal-dev

* dev:
  SignPortal: changed loadLevel to levelExists
doc.sh: Some fixes
NetherPortal: Cleaning up for release
Merge branch 'NetherPortal-dev' into dev

* NetherPortal-dev:
  NetherPortal: Cleaning up for release
  doc.sh: Some fixes
  10151