HOR-3956

+ Enable access to guest user to use the PM_CASES.
+ Add PM_DASHBOARD permission to KPIs.
+ Add internal permission alias:
RBAC->userCanAccess()
     * Verify if the user has a right over the permission. Ex.
     *      $rbac->userCanAccess("PM_CASES");
     *
     * Alias of permissions:
     *      PM_CASES has alias: PM_GUES_CASE
     * This means that a role with PM_GUES_CASE could access like one with PM_CASES
     * unless the permission is required as strict, like this:
     *      $rbac->userCanAccess("PM_CASES/strict");

workflow/engine/classes/WsBase.php

@@ -72,7 +72,7 @@ class WsBase
             $RBAC->loadUserRolePermission($RBAC->sSystem, $uid);
             $res = $RBAC->userCanAccess("PM_LOGIN");
 
-            if ($res != 1) {
+            if ($res != 1 && $uid!== RBAC::GUEST_USER_UID) {
                 $wsResponse = new WsResponse(2, G::loadTranslation('ID_USER_HAVENT_RIGHTS_SYSTEM'));
                 throw (new Exception(serialize($wsResponse)));
             }