Implement move table visualization in web app

[dkirkby]

The endofnight analysis is already extracting and saving a compressed CSV file of all hwtables used during each night, so this issue is to read this file and implement some visualization. Since this file is compressed, #6 is relevant here.

The visualization should show a selected pos_id and its immediate neighbors for a selected (exposure_id, exposure_iter).

[dkirkby]

The basic structure is now in place and I am testing it. I recently added OFFSET_P and PHYSICAL_RANGE_P to the robot model. Still todo are:

• use actual keepouts
• remove padded keepout (dotted line)
• add optional text to display current expid & iter
• add option to rotate into CS5 instead of default petal local coordsys
• implement export animation to animated gif and/or mpeg