Properly use default parameter for cookies.
Merge pull request #1589 from cmfcmf/cookie-util-fix

This PR was merged into zikula:1.3 branch.

Discussion
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Properly use default parameter for cookies.

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | ---
| Fixed tickets | ---
| Refs tickets  | ---
| License       | MIT
| Doc PR        | ---

I know `ServiceUtil::get()` is *evil*, but as `CookieUtil` is placed in a `legacy` folder I came up with that solution.

Without this patch, `CookieUtil` fails if a default value is specified and the cookie does not exist.

/cc @craigh

Commits
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5cb4616dc7b086b5c410612378fc00d83f3ad283 Properly use default parameter for cookies. cmfcmf