Remove new-from-rev from the linter (#1783)

* Fix all revive warnings in the code base

All of these are of the form

```
var Identifier Type = Expr
```

where the `Type` is known from the output of `Expr` and can be omitted
as a result.

* Handle unchecked errors

* Remove new-from-rev

Since the project passes all linter checks now, including older
revisions, we can remove new-from-rev. While here, reorder the linter
config file, and move the enabled linters up and settings down.

* Fix failing test cases

Studio & Performer export tests use local time rather than UTC. This
fixes the test cases so integration test
passes.

pkg/sqlite/filter.go

@@ -105,7 +105,7 @@ type filterBuilder struct {
 	err error
 }
 
-var errSubFilterAlreadySet error = errors.New(`sub-filter already set`)
+var errSubFilterAlreadySet = errors.New(`sub-filter already set`)
 
 // sub-filter operator values
 var (