Pie Panel : improve goal mode

[jsm-oxa]

Hi,

Actually, using the pie panel in goal mode it's quite difficulte because you can easily define a goal number.

So, it should be great if we can set a goal number based on the result of an other querie.

---

For example :
MODE : goal
GOAL : @fields.status_code:200
QUERY : @fields.status_code:404

If the goal query returns : 400
and the query returns : 200
the pie panel should display : 50%

---

Of course, the hits panel can do something like that, but it's not totally the same thing :)

jsm-oxa

[spalger]

Pie charts no longer support goals, so closing this for now. If the pie becomes "goal oriented" down the line, we can address this then.