add /blogs/{blogID} and /blogs/lookup/{blogName} routes

web/api/error.go

@@ -126,7 +126,10 @@ const (
 	ErrMissingScope = 1002
 
 	// Account related
-	ErrAccountNotFound = 1003
+	ErrAccountNotFound = 2001
+
+	// Blog related
+	ErrBlogNotFound = 3001
 )
 
 func ErrCodeMessage(code int) string {
@@ -145,6 +148,8 @@ var errCodeMessages = map[int]string{
 	ErrMissingScope: "Token is missing required scope for this endpoint",
 
 	ErrAccountNotFound: "Account not found",
+
+	ErrBlogNotFound: "Blog not found",
 }
 
 func ErrCodeStatus(code int) int {
@@ -163,4 +168,6 @@ var errCodeStatuses = map[int]int{
 	ErrMissingScope: http.StatusForbidden,
 
 	ErrAccountNotFound: http.StatusNotFound,
+
+	ErrBlogNotFound: http.StatusNotFound,
 }