Fixed #11521 - Add option to switch to using status meta from status label name

[snipe]

This adds the option to pick whether you want the pie chart on the dashboard to reflect the status label name or the status label type, and adds a database field to remember your choice (found in Admin > General).

The "Assets by Status" option includes and respects the colors selected in the status labels section, while they wouldn't make sense in the "Assets by Status Type", since we don't use colors anywhere else there.

Eventually I'd like to make this a switchable tabbed option on the dashboard and deprecate the select box, since I hate adding extraneous database fields and UI choices like this, but I also know that if I change this out from under existing users, we'll get hate mail for it.

I had wanted to save this feature for the dashboard revamp, but this is a first stab at this issue, I guess.

This also adds a transformer for the pie charts so we have potential flexibility with other options moving forward and simplifies some of that controller code.

[snipe]

@uberbrady if you can give me a hand when we get back from JNUC to see if we can jerry-rig the legend to show totals, I'd appreciate it. Every way I've tried has been gross. (When you mouse over the sections, it shows you the count, but if I put them as part of the labels so they show up in the legend, they show up twice in the tooltip when you mouseover the pie sections. Grr.)

[uberbrady]

This makes a lot of sense to me, and looks good. I can help with the legend stuff you were talking about today.