Feature request: toggle for disabling and enabling sharing of a share

[stephdl (Stéphane de Labrusse)]

Sharefolders: Disable shares

Please test and report

[giacomo (Giacomo Sanchietti)]

@pike @vamp @Andy_Wismer @mekitokazi would you give it a try?

[Andy_Wismer (André Wismer)]

Will test it tonight, and give feedback!