Add styling for tables
Add styling for tables

This adds some basic styling for tables in the documentation.
Styling is based on a mix of GitHub tables and tweaked a bit
to match the documentation theme.

Also included is a "code" class for tables, to output code
and cli-output in a table.

Signed-off-by: Sebastiaan van Stijn <64b2b6d12bfe4baae7dad3d018f8cbf6b0e7a044@gone.nl>

SvenDowideit/docs-base,lyndaoleary/docs-base,moxiegirl/docs-base,sfsmithcha/docs-base,ywarnier/docker-docs-base,mikedougherty/docs-base,thaJeztah/docs-base,SvenDowideit/docs-base,tristan0x/docs-base,mikedougherty/docs-base,thaJeztah/docs-base,ywarnier/docker-docs-base,sfsmithcha/docs-base,sfsmithcha/docs-base,lyndaoleary/docs-base,sanscontext/docs-base,zachlysobey/docs-base,sanscontext/docs-base,calavera/docs-base,SvenDowideit/docs-base,mikedougherty/docs-base,moxiegirl/docs-base,thaJeztah/docs-base,sanscontext/docs-base,tristan0x/docs-base,moxiegirl/docs-base,calavera/docs-base,zachlysobey/docs-base