[TASK] Change base TestCase to a 6 compliant
[TASK] Migrate to namespaces
[TASK] Rename ViewHelpers\ to namespaces
[TASK] Rename View\UncacheTemplateView to namespaces
[TASK] Rename ViewHelpers\Var to namespaces
[TASK] Rename ViewHelpers\Uri to namespaces
[TASK] Rename ViewHelpers\System to namespaces
[TASK] Rename ViewHelpers\Security to namespaces
[TASK] Rename ViewHelpers\Site to namespaces