Prevent computing unit norm of vectors of 0s (#473)
Prevent computing unit norm of vectors of 0s (#473)

Previously, the embedding projector would take the norm of vectors of all 0s, resulting in vectors of all NaN values being used as part of PCA calculations. This change adds a guard to prevent that.
qiuminxu/tensorboard,tensorflow/tensorboard,agrubb/tensorboard,agrubb/tensorboard,qiuminxu/tensorboard,tensorflow/tensorboard,qiuminxu/tensorboard,francoisluus/tensorboard-supervise,agrubb/tensorboard,agrubb/tensorboard,francoisluus/tensorboard-supervise,francoisluus/tensorboard-supervise,tensorflow/tensorboard,francoisluus/tensorboard-supervise,agrubb/tensorboard,tensorflow/tensorboard,tensorflow/tensorboard,qiuminxu/tensorboard,tensorflow/tensorboard,francoisluus/tensorboard-supervise,tensorflow/tensorboard,qiuminxu/tensorboard,qiuminxu/tensorboard,francoisluus/tensorboard-supervise,agrubb/tensorboard