Adds dev packages again to composer.lock
Merge pull request #149 from nsendetzky/master

Improves extension description and adds dev packages to composer.lock file
Merge pull request #150 from nsendetzky/master

Removes old requirements
Adds specialized scheduler task for sending e-mails
Merge branch 'master' of https://github.com/nsendetzky/arcavias-typo3
Merge branch 'master' of https://github.com/Arcavias/arcavias-typo3