*8784* Introduced object cache for retrieving galleys
*8784* Use object caches
*8786* Fixed resetting app before the submodule changes track commit
Merge pull request #203 from beghelli/8784-fix

*8784* Add caching to some article galley fetches
*8785* Adapted existing scheduled tasks to the new scheduled task interface
*8785* Introduced missing task names, fixed constructor calls, return execution state
*8785* Submodule changes track ##beghelli/8785-fix##