[dev] Pull Request: Max Value to Dynamic Fields in AgentTicketZoom via Sysconf

Hi Devs, I added a config option to change the length of DynamicFields in AgentTicketZoom via Sysconfig. Any comments on this or can I stage it as pull request to the master? Link: https://github.com/hanneshal/otrs/commit/7fd2878faa129abefc75e0b3b6c770f1afc... regards Hannes