Avoid flush by category selector
Merge pull request #1561 from Guite/1.3

This PR was merged into zikula:1.3 branch.

Discussion
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Avoid flush by category selector

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | https://github.com/Guite/MostGenerator/issues/464
| Refs tickets  | 
| License       | MIT
| Doc PR        | 

Commits
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b52f4e365a121218ddd99f4cb297d398c5775957 Avoid flush by category selector Guite