Major improvements on policy configuration

- Bugfixes on change_policy
- Replaced _consent modules with configurable modules

modpol_core/modules/display_policies.lua

@@ -29,7 +29,9 @@ function display_policies:initiate(result)
                   v2 = self.org.policies[k][k2]
                end
                local v2_string = ""
-               if type(v2) == "string" then
+               if not v2 then
+                  v2_string = "none"
+               elseif type(v2) == "string" then
                   v2_string = v2
                elseif type(v2) == "table"
                   or type(v2) == "number" then