Feature: Set max node and edge sizes via template

[benloh]

Addresses netcreateorg/netcreate-2018#246

This adds four parameters to the template:

• nodeSizeDefault -- default: 5 -- radius
• nodeSizeMax -- default: 50 -- radius
• edgeSizeDefault -- default: 0.175 -- stroke width
• edgeSizeMax -- default: 25 -- stroke width

And also implements the max size limit during drawing with d3-simplenetgraph.

A few notes:

• Generally you probably want edgeSizeMax to be no greater than nodesizeMax * 2 so the link line isn't wider than the node, though it can still be wider than smaller nodes.
• d3-simplenetgraph was missing a bunch of this binds, which was probably resulting in undefined objects. Ini particularly it's worth checking the functionality of the following to see what changes, if any, were found:
  • _ClearSVG
  • tooltipForNode
  • displayUpdated
  • _Transition

[jdanish]

@benloh meant to say: this look good. Not 100% how to test those functions in the this note, but I poked around and will continue to do so.

[benloh]

how to test those functions in the this note

Could this be the source of the undefined popup errors netcreateorg/netcreate-itest#17?

I wouldn't worry about the others. They were mostly a note to myself.

[jdanish]

how to test those functions in the this note

Could this be the source of the undefined popup errors netcreateorg/netcreate-itest#17?

Those are still happening, so I guess not...