Implement proportional column resizing for SideStakeTableView #1764

Job	Run time
Lint	1m 3s
ARM [GOAL install] [buster]	3m 29s
macOS 11 native [GOAL install] [GUI] [no depends]	16m 0s
Win32	4m 34s
Win64	8m 11s
i386 Linux [GOAL install] [focal]	2m 44s
x86_64 Linux [GOAL install] [GUI] [focal] [no depends]	25m 23s
x86_64 Linux [GOAL install] [GUI] [bionic] [no depends]	28m 38s
macOS 10.14 [GOAL deploy] [GUI] [no tests] [focal]	16m 26s
	1h 46m 28s

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