fix(model): flip erroneous boolean SQL default for CompanyPostalAddress

changing this SQL default value now is admittedly too late, as the damage is already done, but documents the right default value nevertheless

models/company.model

@@ -8,7 +8,7 @@ Company
   name            CompanyName             -- == (CI Text) -- NOTE: Fraport department name may carry additional information; use the Shorthand with respect to UserCompanyDepartment
   shorthand       CompanyShorthand        -- == (CI Text) and CompanyKey :: CompanyShorthand -> CompanyId   A change to AvsId as primary key is too much work and not strictly necessary due to Uniqueness
   avsId           Int     default=0       -- primary key from avs, use negative numbers for non-AVS companies 
-  prefersPostal   Bool    default=false   -- new company users prefers letters by post instead of email
+  prefersPostal   Bool    default=true    -- new company users prefers letters by post instead of email
   postAddress     StoredMarkup Maybe      -- default company postal address, including company name 
   email           UserEmail Maybe         -- Case-insensitive generic company eMail address  
   -- UniqueCompanyName name               -- Should be Unique in AVS, but we do not yet need to enforce it