Added basic auth to data source edit/create, add support for basic auth in data source proxy code, Closes #1510

pkg/util/encoding_test.go

@@ -0,0 +1,16 @@
+package util
+
+import (
+	"testing"
+
+	. "github.com/smartystreets/goconvey/convey"
+)
+
+func TestEncoding(t *testing.T) {
+
+	Convey("When generating base64 header", t, func() {
+		result := GetBasicAuthHeader("grafana", "1234")
+
+		So(result, ShouldEqual, "Z3JhZmFuYToxMjM0")
+	})
+}