[fix] charts: no intersect needed for tooltip

Added intersect: false option to Chart.js charts, because currently we have to place the cursor exactly on the lines to display tooltip, which is quite hard and not convenient.

www/plugins/graph/js/controllers/account-controllers.js

@@ -208,6 +208,7 @@ function GpAccountBalanceController($scope, $controller, $q, $state, $filter, $t
           },
           tooltips: {
             enabled: true,
+            intersect: false,
             mode: 'index',
             callbacks: {
               label: function(tooltipItems, data) {
@@ -480,6 +481,7 @@ function GpAccountCertificationController($scope, $controller, $q, $state, $filt
           },
           tooltips: {
             enabled: true,
+            intersect: false,
             mode: 'index',
             callbacks: {
               label: function(tooltipItems, data) {