Issue when loading localConfig in Env.fs

[CallumVass]

Hi,

When I was trying to load a localConfig file I encountered an issue whereby it wasn't adding any key/value pairs. I've got a fix in my local branch so happy to do a PR (#2), I just wanted to make sure the way it is now isn't the intended behaviour?

SAFE.Simplified/server/Env.fs

Line 64 in 098ce4b

if (variables.ContainsKey(property.Name)) then

SAFE.Simplified/server/Env.fs

Line 77 in 098ce4b

if (variables.ContainsKey(property.Name)) then

[Zaid-Ajaj]

you are right, it should have been "if NOT contains key then ADD"