- changed navigation CSS. Icons are now always correctly positioned.
- added stabilizationIterations option to graph.
- added loadXYinDataset() method to save the XY positions of nodes in the dataset.
- seperated allowedToMove into allowedToMoveX and allowedToMoveY. This is required for initializing nodes from hierarchical layouts after loadXYinDataset().
- added storePosition() method to save the XY positions of nodes in the dataset.
- seperated allowedToMove into allowedToMoveX and allowedToMoveY. This is required for initializing nodes from hierarchical layouts after storePosition().