Minor bug. Extra comma in object def.
Snapshot of work in progress
Work in progress on reset collections.
Merge branch 'master' of https://github.com/concord-consortium/codap
Merge branch 'doCommand-reset'

There are some places where axis labels are not properly cleared. These
will handled as bugs when they are isolated.

[Fixes #74726740]
Changes from walk-through:

Remove unnecessary console logging.
Correct spelling of deletAttributes action in plot_layer.js
Do not destroy global values in data_context.js (will just eliminate
variable in sliders.) Finally, clean up jshintrc to remove camelcase check.