Fix error handling broken since v0.0.63

Fix series select handler, add form length option, fix MatrixSelector…

… downstream querying

Fix classic UI and /federate endpoint

fix panics in remote write

fix offsets within subqueries

fix offsets within subqueries

Fix UI build issues and subquery handling

update prom dep to 2.24

custom metrics paths, configurable timeouts, newer alpine base, and d…

…ocker user change

json logging, WebIdentity, merge ordering, remote_read fixes, and COR…

…S support