Redo settings a bit, move a lot of init logic to main.go

resolver/resolver.go

@@ -68,10 +68,6 @@ func NewResolver(c settings.ResolvSettings) *Resolver {
 		}
 	}
 
-	if len(c.DOHServer) > 0 {
-		r.servers = append([]string{c.DOHServer}, r.servers...)
-	}
-
 	return r
 }
 
@@ -141,8 +137,7 @@ func (r *Resolver) parseServerListFile(buf *os.File) {
 
 }
 
-func (r *Resolver) ReadServerListFile(path string) {
-	files := strings.Split(path, ";")
+func (r *Resolver) ReadServerListFile(files []string) {
 	for _, file := range files {
 		buf, err := os.Open(file)
 		if err != nil {