Add others section to upstream servers pie chart

[DL6ER]

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There are queries which are neither sent upstream nor are they cached or blocked. These are incorrectly ignored in the upstream server pie chart leading to a mismatch of the blocked percentage compared to the value reported at the top. Even when both are correct (their difference is caused by different reference frames), this is confusing. To compensate, we add a new type other which summarizes all these queries, causing the two reference frames to be identical.

[yubiuser]

I think we need to add something here:

FTL/src/api/api.c

Lines 723 to 726 in 7387e81

	if(strcmp(forwarddest, "cache") == 0)
	forwarddestid = -1;
	else if(strcmp(forwarddest, "blocklist") == 0)
	forwarddestid = -2;

Clicking on the new upstream "other" opens the query log but no queries are found.

[yubiuser]

If adding "-3" here: I promised Promo pi-hole/web#1594

[DL6ER]

This shouldn't make any difference, the order is not changed. Other will use the color the first upstream had before, the first upstream gets the color for the former seconds, etc.

[pralor-bot]

This pull request has been mentioned on Pi-hole Userspace. There might be relevant details there:

https://discourse.pi-hole.net/t/pi-hole-ftl-v5-14-web-v5-11-and-core-v5-9-released/53529/1

[pralor-bot]

This pull request has been mentioned on Pi-hole Userspace. There might be relevant details there:

https://discourse.pi-hole.net/t/wrong-percent-calculation-in-pie-chart-v2/53599/5

[pralor-bot]

This pull request has been mentioned on Pi-hole Userspace. There might be relevant details there:

https://discourse.pi-hole.net/t/getting-other-on-upstream-server-list-after-update-to-the-latest-version/53753/4

[pralor-bot]

This pull request has been mentioned on Pi-hole Userspace. There might be relevant details there:

https://discourse.pi-hole.net/t/plotzlich-ein-unbekannter-upstream-server-im-dashboard/60623/2