fix(login): hide divider if no oath

closes #3980

public/app/core/controllers/login_ctrl.js

@@ -17,6 +17,7 @@ function (angular, coreModule, config) {
 
     $scope.googleAuthEnabled = config.googleAuthEnabled;
     $scope.githubAuthEnabled = config.githubAuthEnabled;
+    $scope.oauthEnabled = config.githubAuthEnabled || config.googleAuthEnabled;
     $scope.disableUserSignUp = config.disableUserSignUp;
     $scope.loginHint     = config.loginHint;
 
@@ -84,7 +85,5 @@ function (angular, coreModule, config) {
     };
 
     $scope.init();
-
   });
-
 });

public/app/partials/login.html

@@ -63,9 +63,7 @@
 				</div>
 			</form>
 
-			<div class="clearfix"></div>
-
-			<div class="text-center login-divider">
+			<div class="text-center login-divider" ng-if="oauthEnabled">
 				<div class="login-divider-line">
 				  <span class="login-divider-text">
 				    Or login with
@@ -75,7 +73,7 @@
 
 			<div class="clearfix"></div>
 
-			<div class="login-oauth text-center">
+			<div class="login-oauth text-center" ng-if="oauthEnabled">
 				<a class="btn btn-large btn-google" href="login/google" target="_self" ng-if="googleAuthEnabled">
 					<i class="fa fa-google"></i>
 					with Google
@@ -86,6 +84,8 @@
 				</a>
 			</div>
 
+			<div class="clearfix"></div>
+
 			<div class="text-center password-recovery">
 				<div class="text-center">
 					<a href="user/password/send-reset-email">

public/less/login.less

@@ -88,6 +88,8 @@
 }
 
 .login-oauth {
+  margin-bottom: 15px;
+
   .btn {
     margin: 5px;
   }
@@ -104,7 +106,7 @@
 
 .password-recovery {
   background: @grafanaTargetBackground;
-  margin-top: 30px;
+  margin-top: 10px;
   padding: 10px;
   a {
     color: @grayLight;