Add a Python command to the mantidplot syntax to display a table workspace

[martyngigg]

This issue was originally TRAC 10087

This was reported by a user, Carl Jindra, from GE.

We currently do not have any way of displaying a table workspace from a script.

Add a simple command to the mantidplot language, something like display, that can display a workspace in the most sensible manner, i.e display the matrix for Workspace2D and show a table for a TableWorkspace.

[martyngigg]

@NickDraper (2014-12-08T10:25:36):
Moved to the backlog at the code freeze of R3.3

[martyngigg]

This will be possible in Workbench but it is not worth the effort to implement in MantidPlot.