fmbt-editor: support parameter combo -p -P
fmbt-editor: support parameter combo -p -P

--preview-only and --no-preview combination launches two fmbt-editors,
the first has only editor, the second only preview.

rseymour/fMBT,heivi/fMBT,mlq/fMBT,heivi/fMBT,violep01/fMBT,CosminNiculae/fMBT,CosminNiculae/fMBT,CosminNiculae/fMBT,yoonkiss/fMBT,heivi/fMBT,yoonkiss/fMBT,pombreda/fMBT,heivi/fMBT,violep01/fMBT,pombreda/fMBT,mlq/fMBT,OMKR/fMBT,01org/fMBT,giantpinkwalrus/fMBT,violep01/fMBT,rseymour/fMBT,giantpinkwalrus/fMBT,OMKR/fMBT,OMKR/fMBT,rseymour/fMBT,yoonkiss/fMBT,violep01/fMBT,yoonkiss/fMBT,pombreda/fMBT,pombreda/fMBT,mixu-/fMBT,pablovirolainen/fMBT,acozzette/fMBT,pablovirolainen/fMBT,pombreda/fMBT,pyykkis/fMBT,CosminNiculae/fMBT,giantpinkwalrus/fMBT,pyykkis/fMBT,giantpinkwalrus/fMBT,pyykkis/fMBT,pablovirolainen/fMBT,mlq/fMBT,mixu-/fMBT,01org/fMBT,heivi/fMBT,giantpinkwalrus/fMBT,heivi/fMBT,heivi/fMBT,OMKR/fMBT,pyykkis/fMBT,CosminNiculae/fMBT,mlq/fMBT,OMKR/fMBT,rseymour/fMBT,CosminNiculae/fMBT,pablovirolainen/fMBT,acozzette/fMBT,mixu-/fMBT,pablovirolainen/fMBT,CosminNiculae/fMBT,OMKR/fMBT,mixu-/fMBT,pyykkis/fMBT,rseymour/fMBT,pyykkis/fMBT,01org/fMBT,violep01/fMBT,acozzette/fMBT,yoonkiss/fMBT,mixu-/fMBT,mlq/fMBT,acozzette/fMBT,rseymour/fMBT,01org/fMBT,acozzette/fMBT,pablovirolainen/fMBT,pombreda/fMBT,mlq/fMBT,rseymour/fMBT,pombreda/fMBT,01org/fMBT,mlq/fMBT