[InspirationTracker] Dragging a token that does not represent a character causes an error

[RaaviArda]

When dragging a token that doesn't have "represents" property set to the game board the API console outputs an error - invalid parameter (empty) for getAttrByName(). This is caused by function handleAddToken:
handleAddToken = (obj) => {
setStatusmarker(obj, (getAttrByName(obj.get('represents'), 'inspiration', 'current') === 'on'));
},

There is no validation against undefined or empty "represents". Simplest fix:

handleAddToken = (obj) => {
	if (typeof obj.get('represents') != 'undefined' && obj.get('represents').length > 0) {
		setStatusmarker(obj, (getAttrByName(obj.get('represents'), 'inspiration', 'current') === 'on'));
	}
},