Overhaul group and widget sizing options

[joepavitt]

Description

Our current sizing widget allows a user to select from auto or an x by y size for a given group or widget. This was inherited from Dashboard 1.0, and to-date has provided enough functionality to get off the ground. However, there are more flexible options here that I think we should consider, in particular a separation of x and y sizing.

Consider the following:

• auto in a single dimension. Currently, the auto option fills the horizontal space (fill-container), and then vertically adjusts to it's content (hug-contents). In some cases, you may want to have a defined width, but fill whatever space is available vertically.
• Introduction of "Fill Container" and "Hug Contents" options for each dimension as "auto" (as mentioned int he previous point) does have inconsistencies.
• If a group is given the "Fill Container" option, then we would easily be able to produce full-screen widgets, e.g. charts or worldmaps

Have you provided an initial effort estimate for this issue?

I have provided an initial effort estimate