Correcting error - ClassNotFoundException: Attempted to load class "Forbidden" from namespace "Symfony\Component\HttpKernel\Exception”.
Switching to Exception\AccessDeniedHttpException.
Adding namespace. Refs. https://github.com/zikula/core/pull/1468.
Switching to “AccessDeniedException”.
Correcting comments.
Merge pull request #1468 from shefik/Zikula_Exception_Forbidden

This PR was merged into zikula:1.3 branch.

Discussion
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Correcting error - ClassNotFoundException: Attempted to load class "Forbidden"

Correcting error - ClassNotFoundException: Attempted to load class "Forbidden" from namespace "Symfony\Component\HttpKernel\Exception”.

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | 
| Refs tickets  |
| License       | MIT
| Doc PR        |

Commits
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df57f5b5e126dd488b0dfb21893555b9c415af38 Correcting error - ClassNotFoundException: Attempted to load class "Forbidden" from namespace "Symfony\Component\HttpKernel\Exception”. shefik
3ac754f205a8158e187d914cf021d770f08b7cc3 Switching to Exception\AccessDeniedHttpException. shefik
80f6e5ddf42dfff9c72733d9f267407838f63b9a Adding namespace. Refs. https://github.com/zikula/core/pull/1468. shefik
a1ba72236d4e0dac329e3912e0bdd04a9c82a191 Switching to “AccessDeniedException”. shefik
982755834c3845cd03e83de5e25bce2a440257fe Correcting comments. shefik