Wire up the rest of the sidestake contract machinery #1736

Job	Run time
Lint	1m 23s
macOS 11 native [GOAL install] [GUI] [no depends]	9m 17s
ARM [GOAL install] [buster]	3m 40s
Win32	3m 55s
Win64	8m 1s
i386 Linux [GOAL install] [focal]	3m 15s
x86_64 Linux [GOAL install] [GUI] [focal] [no depends]	19m 56s
x86_64 Linux [GOAL install] [GUI] [bionic] [no depends]	24m 46s
macOS 10.14 [GOAL deploy] [GUI] [no tests] [focal]	13m 21s
	1h 27m 34s

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