Improve test experience - resolves #353

For the time being, we will be catching some verbose process logs coming from the browser during tests. Those messages are simply caught and filtered out from the output.

If someone will encounter any unnecessary messages that are still bugging him, we can add additional regex to solve the problem.
The method is called `filterAndModifyMessage()`, yet it returns a `boolean`, and only seems to filter messages, but not modify their contents.