Set default node size in the shell panel to be 70 px

[prrao87]

The default node label size of 40 px is just too small, making the truncated text very hard to read. So the one thing I find myself dong every time I create a graph is manually changing the node label size for every node table one by one. I think most users who use Explorer are using it to visualize ~100 nodes/rels or fewer at a time (it's not designed for visualizing a huge number of nodes/rels anyway).

After tons of experimentation across many graphs, I find that the size of 70 px is a good compromise (doesn't look too large or small). This size also corresponds more closely with Neo4j's default node size.

[prrao87]

Below is an example of displaying names on Person nodes using the default node size of 40. It only shows the first 3 characters, and the rest is truncated.

With a node size of 70, I can at least see the first 7-10 characters and it becomes easier to "guess" what the full word might be saying, improving user experience.

[prrao87]

I did notice that the force-directed layout algorithm behaves a bit differently when the nodes are larger (the clusters don't go as far apart as they did when the nodes were smaller). I presume there's a setting on the force-directed algorithm to help keep the nodes a certain minimum distance apart that's dependent on the size, and that it could be updated if the default node size is also updated?