Fix for #245 - Images no stay on the appropriate plot

Plot was being overwritten for every other plot, every save. After that,
ran into an issue with the login prompt not properly calling back to
load images from every plot, only the one that opened the dialog.
Fix for #212 - Horizontal Resize no longer overlaps plots
Working on #237. Removed the squares from being displayed
More changes to select the nearest image
Added more accurate calculation for first-node distance
Work on color coding by string variables
Merge branch 'master' into pim-strings
Working on color coding by string variables
Update docker images.
Provide a better error message when IPython parallel isn't running.
Update install.rst
Warn users they will have to reinstall SSL interception certificates after restarting boot2docker.
Make agent video delivery work reliably with Chrome.
Tweaking the agent video API.
Document the agent video API.
fixed typo, i think
for timeseries-N we need to include the time field as THE first field in our outputs for the import script to know it as the time field
Merge branch 'master' of github.com:sandialabs/slycat
Merge branch 'master' into pim-strings
Updating table colormap after values have changed