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 above 5 lines can be more neatly written as:

```
return matcher.find();
```

or if you find it easier to read:

```
return (matcher.find()) ? true : false;
```