Edit party list description in ElectionMapTooltip

[na399]

ref #214

From seat no.
,

to the number of seats of each party
.

NB there might be a faster way to query the numbers, instead of nationwidePartyStatsFromSummaryJSON(), that I'm unaware of.

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[p16i]

Thanks for the PR. What do you think if we adjust the description slightly?

For example,

พรรคอนาคตใหม่
ได้ 56 ที่นั่ง

I'm going to merge anyway. This is a minor change.

[na399]

Thank you for the suggestion and the merge.

IMHO, I feel 'ได้' would be repetitive across the parties. Since it can be assumed that parties receive (ได้) the seats, I think the viewer should understand what the numbers mean and they can have faster access to the information (the number) without the need to read anything else, see Data-Ink ratio.

With the same reason, I was tempted to remove 'พรรค' in front of the party name, but I don't know whether that would go against the design proposal or not.

Anyway, if user research suggests otherwise, feel free to edit my commit krub. 😉

[p16i]

FY: the feature is on prod now.