TASK: Add changelog for 5.0.24

See https://jenkins.neos.io/job/flow-release/241/

Documentation/TheDefinitiveGuide/PartV/ChangeLogs/5024.rst

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+`5.0.24 (2020-05-04) <https://github.com/neos/flow-development-collection/releases/tag/5.0.24>`_
+================================================================================================
+
+Overview of merged pull requests
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+`BUGFIX: Make sure to use only a consistent NumbersReaderCache <https://github.com/neos/flow-development-collection/pull/1991>`_
+--------------------------------------------------------------------------------------------------------------------------------
+
+It might happen that there is a discrepancy between parsedFormatsIndices and parsedFormats cache. We need to make sure we are accessing the consistent information instead of relying that both are there, to avoid a PHP exception.
+
+Same fix was already applied to DatesReader, see https://github.com/neos/flow-development-collection/pull/1899.
+
+Resolves #564
+
+**Checklist**
+
+- [ ] Code follows the PSR-2 coding style
+- [ ] Tests have been created, run and adjusted as needed
+- [ ] The PR is created against the [lowest maintained branch](https://www.neos.io/features/release-roadmap.html)
+
+* Packages: ``Flow``
+
+`BUGFIX: Make sure to use only a consistent DatesReaderCache <https://github.com/neos/flow-development-collection/pull/1899>`_
+------------------------------------------------------------------------------------------------------------------------------
+
+It might happen that there is a discrepancy between parsedFormatsIndices and parsedFormats cache. We need to make sure we are accessing the consistent information instead of relying that both are there, to avoid a PHP exception.
+
+Resolves #564 
+
+The problem described in #564 is not easy to reproduce, as it only happens "once in a while" in production. See issue comments for further information.
+
+**Checklist**
+
+- [x] Code follows the PSR-2 coding style
+- [ ] Tests have been created, run and adjusted as needed
+- [x] The PR is created against the [lowest maintained branch](https://www.neos.io/features/release-roadmap.html)
+
+* Packages: ``Flow``
+
+`BUGFIX: Fix error handling for importing resources <https://github.com/neos/flow-development-collection/pull/1888>`_
+---------------------------------------------------------------------------------------------------------------------
+
+<!--
+Thanks for your contribution, we appreciate it!
+
+Please read through our pull request guidelines, there are some interesting things there:
+https://discuss.neos.io/t/creating-a-pull-request/506
+
+And one more thing... Don't forget about the tests!
+-->
+
+While working with `ResourceManager` I noticed that importing non-existent resources would fail later in the process than expected: They would only fail when trying to copy the temporary file to it's persistent location instead of failing when fetching the original file.
+
+**What I did**
+This PR fixes the incorrect error handling of fetching files when importing resources.
+
+**How I did it**
+The code assumed that `copy` would throw an exception if it failed - however, it returns `false` in that case.
+
+**How to verify it**
+Try to import a non-existent resource (e.g. http://example.com/this-file-does-not-exist). It should now correctly throw the `Could not copy the file from "..." to temporary file "..."` exception  from `WritableFileSystemStorage::importResource` instead of the much later `The temporary file of the file import could not be moved to the final target "..."` from `WritableFileSystemStorage::moveTemporaryFileToFinalDestination`
+
+**Checklist**
+
+- [x] Code follows the PSR-2 coding style
+- [ ] Tests have been created, run and adjusted as needed
+- [x] The PR is created against the [lowest maintained branch](https://www.neos.io/features/release-roadmap.html)
+
+* Packages: ``Flow``
+
+`Detailed log <https://github.com/neos/flow-development-collection/compare/5.0.23...5.0.24>`_
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~