Scidash-api

* model/backend is optional now
* additional amount of resources is matching now
* improved error messages

* Supporting OS detecting, for icons on Scidash
* Minor improvements

* Config fix

* isNaN validation
* Avoiding supressing AttributeError on serialization
* Dict and Numeric for prediction
* Unrequired run_params and attrs
* New Backend field
* Expecting list instead of dict
* Do not fail on invalid score

You have to check with changes before using library, no back compatibility with 0.3.0