Added legacy layer to ModuleStateEvent.
Merge pull request #1550 from cmfcmf/legacy-event

This PR was merged into zikula:1.3 branch.

Discussion
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Added legacy layer to ModuleStateEvent.

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | ---
| Fixed tickets | ---
| Refs tickets  | ---
| License       | MIT
| Doc PR        | ---

Commits
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d4a6f171aea9b947cd371c2f4ebee00e1f1d908e Added legacy layer to ModuleStateEvent. cmfcmf