Improve performance for Devtoberfest session [DO NOT MERGE]

[nicoschoenteich]

trafficstars

This pull request was opened to document the steps we took during the Devtoberfest session Improving the Performance of UI5 Applications.

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:white_check_mark: nicoschoenteich
:x: nicogeburek

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[cla-assistant[bot]]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you sign our Contributor License Agreement before we can accept your contribution.

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