Add ability to manage custom chart color schemes #518

Job	Run time
Web client test (admin)	1m 39s
Library test (js)	50s
Server tests	3m 31s
Web client test (compose)	1m 22s
Library test (vue)	1m 4s
Web client test (discovery)	1m 26s
Web client test (privacy)	1m 24s
Web client test (reporter)	1m 22s
Web client test (one)	1m 31s
Web client test (workflow)	1m 40s
Send matrix testing notification	3s
	15m 52s

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