:wrench: Avoid rerenders of unchanging elements.

[JonasGilg]

After some digging around I found out that the whole UI rerenders basically every frame, because the date-time and statusbar elements were rerendered every frame.

I added a simple check to avoid that from happening.

[coveralls]

Pull Request Test Coverage Report for Build 4052222874

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 2.932%

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Totals
Change from base Build 3854017668:	0.0%
Covered Lines:	491
Relevant Lines:	16745

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💛 - Coveralls