add deleting, promoting/demoting, guesting (soft banning) users

app.lua

@@ -1,5 +1,10 @@
 local lapis = require("lapis")
 local app = lapis.Application()
+local constants = require("constants")
+
+local db = require("lapis.db")
+-- sqlite starts without foreign key enforcement
+db.query("PRAGMA foreign_keys = ON")
 
 local util = require("util")
 
@@ -11,6 +16,7 @@ local function inject_methods(req)
   req.ntob = function(_, v)
     return util.ntob(v)
   end
+  req.PermissionLevelString = constants.PermissionLevelString
 end
 
 app:before_filter(inject_methods)