Import 13c4facf24: POTATO, LOW turns off shaders, med/hi turns on. Reset resolution to 1 when switch back from potato (by Caitlyn)

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This is an automated proposal to look at a commit made by Caitlyn and import it into Overte

Commit:	13c4facf242782c8aa0bf4267f49c22f9bab07c4
Author:	Caitlyn
Date:	Tue, 07 Apr 2020 13:14

POTATO, LOW turns off shaders, med/hi turns on. Reset resolution to 1 when switch back from potato

Stats:

Filename	Stats	Lines	Added	Removed	Lines in blame
interface/src/PerformanceManager.cpp		14	9	5	⚠ 0
1 files	-	14	9	5	0

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