Fix various docblocks
Add required description to all composer.json files
Merge pull request #6298 from lucasmichot/5.0-composer-description

[5.0] Add A Description To All composer.json Files
Merge pull request #6264 from lucasmichot/5.0-AppNamespaceDetectorTrait-docblock

[5.0] Fixed docblocks and try/catch alignment