Increase line-height in Tables

[juliangieseke]

When having multi-line table cells it looks bad with the current setting of 1.1rem, I suggest increasing it to 1.4 or even 1.5 to increase the space between lines.

simple example from the docs:

[ashenden]

@juliangieseke great find. I did not intend to include type size overrides for tables, but I think when I rebuilt the table component in CNVS I pulled over legacy styles. I just pushed a commit to this PR (https://github.com/mesosphere/cnvs/pull/117) that resolves this -- allowing .table to inherit from body, which has more reasonable line-height values.