add horizontal spacing, logo removal, horizontal alignment optionas

[kangaaroob]

Adds 3 new configuration options and subsequent features:

1. Horizontal Spacing - Spacing between horizontal grafana objects in units of pixels. Defaults to 0 so that existing behavior is unchanged.
2. Logo Removal - Optionally adds the query flag to remove the grafana logo in the top right of each grafana object. Defaults to true because who wants this lol.
3. Horizontal Alignment - Left, right, or center spacing across the component parent relative to the center of the grafana objects. Defaults to left so that existing behavior is unchanged.

These are super minor additions, but the spacing + alignment stuff is a position change that could screw up existing configurations. That being said, my testing in the demo environment and my actual mirror didn't show any such behavior!

Here's what I was able to implement using these changes on my dashboard!