Use session for flash messages

Merge pull request #48 from jweiland-net/updateComposerReplacement

Update composer replacement

Merge pull request #46 from jweiland-net/typo3_13_compatibility

Typo3 13 compatibility

Merge pull request #43 from jweiland-net/updateVersion

Update version to 8.0.2

Merge pull request #42 from jweiland-net/preventPageLayoutException

Prevent throwing exception in page layout preview

Merge pull request #40 from jweiland-net/newRelease

New release

Merge pull request #35 from jweiland-net/addGitAttributesFile

Add git attributes file

Merge pull request #34 from jweiland-net/removeTaskFromDocumentation

Remove task from documentation

Merge pull request #33 from jweiland-net/updateDocumentation

Update documentation

[DOCS] Update screenshots of avalex website, update some textss