[BUG] react-devtools console loop

[anzook]

Bug Description
While using a Pyret activity and having the dev tools open, a message is looped to console (react-devtools-bridge)

To Reproduce
Steps to reproduce the behavior:
On: chrome browser
start a pyret activity
open developer tools and observer console messages

[anzook]

One try is to catch and return out of this message case, see code added here : #48