TT-2 Checkpointing format changes
TT-2 Fixed typo.
TT-2 More messing around with SVG, included template filters and metal "tag" directly in index.html.
TT-2 Cleaner use of css for svg symbols. Now have image effects for large tokens but not for small.
TT-2 More flexibility in styling for metal tag in large and small token sizes.
TT-2 Extending code to support the test phase of the experiment. (incomplete)