enhance quota support.

now includes:
- perOrg (users, dashboards, datasources, api_keys)
- perUser (orgs)
- global (users, orgs, dashboards, datasources, api_keys, sessions)

pkg/api/dashboard.go

@@ -88,7 +88,7 @@ func PostDashboard(c *middleware.Context, cmd m.SaveDashboardCommand) {
 
 	dash := cmd.GetDashboardModel()
 	if dash.Id == 0 {
-		limitReached, err := middleware.QuotaReached(cmd.OrgId, m.QUOTA_DASHBOARD)
+		limitReached, err := middleware.QuotaReached(c, "dashboard")
 		if err != nil {
 			c.JsonApiErr(500, "failed to get quota", err)
 			return