Working auth and photo json endpoint

Signed-off-by: Kris Nóva <kris@nivenly.com>

vendor/github.com/dsoprea/go-utility/filesystem/does_exist.go

@@ -0,0 +1,19 @@
+package rifs
+
+import (
+	"os"
+)
+
+// DoesExist returns true if we can open the given file/path without error. We
+// can't simply use `os.IsNotExist()` because we'll get a different error when
+// the parent directory doesn't exist, and really the only important thing is if
+// it exists *and* it's readable.
+func DoesExist(filepath string) bool {
+	f, err := os.Open(filepath)
+	if err != nil {
+		return false
+	}
+
+	f.Close()
+	return true
+}