[Charts] Sparklines

[Cristi Scutaru]

Implemented rather as Effects (at the field level), not Charts.

Could call/implement as a specific generic DX SparkLine/SparkColumn/SparkArea function, with list of values, or rather query column IDs.

Custom draw in cell - which could also show text/values, as usual (sum/total).

[Cristi Scutaru]

solve negatives (in columns) - TODO

test with booleana - TODO

color areas between axes and graph - TODO

zero-based axis - TODO

get data from values/query lanes - DONE

use gradient/semi-transparent colors - TODO for pies

more tests, for diff values and data types - TODO

validate spark params - TODO

line/area markers - DONE

axis - DONE

more colors for pie - TODO

validate all rectangles - TODO

[Cristi Scutaru]

close #28 - added Spark Charts demo query, new Spark Chart effect icons

→ <<cset c8f1a25357fe>>

[Cristi Scutaru]

ref #28 - added XEffectType

→ <<cset b7190dc3ed7a>>