Fix: Send non-protocol messages from the printer to clients
Fix: Send non-protocol messages from the printer to clients

Solves #1385

ryanneufeld/OctoPrint,shohei/Octoprint,Salandora/OctoPrint,JackGavin13/octoprint-test-not-finished,Jaesin/OctoPrint,shohei/Octoprint,MoonshineSG/OctoPrint,foosel/OctoPrint,bicephale/OctoPrint,foosel/OctoPrint,Salandora/OctoPrint,JackGavin13/octoprint-test-not-finished,nickverschoor/OctoPrint,MoonshineSG/OctoPrint,ryanneufeld/OctoPrint,foosel/OctoPrint,beeverycreative/BEEweb,senttech/OctoPrint,shohei/Octoprint,shohei/Octoprint,JackGavin13/octoprint-test-not-finished,nickverschoor/OctoPrint,Salandora/OctoPrint,beeverycreative/BEEweb,Jaesin/OctoPrint,ryanneufeld/OctoPrint,MoonshineSG/OctoPrint,Jaesin/OctoPrint,ryanneufeld/OctoPrint,senttech/OctoPrint,beeverycreative/BEEweb,bicephale/OctoPrint,nickverschoor/OctoPrint,bicephale/OctoPrint,MoonshineSG/OctoPrint,nickverschoor/OctoPrint,shohei/Octoprint,senttech/OctoPrint,senttech/OctoPrint,JackGavin13/octoprint-test-not-finished,foosel/OctoPrint,bicephale/OctoPrint,Jaesin/OctoPrint,Salandora/OctoPrint,beeverycreative/BEEweb