Account functionality extended, API authentication implemented

- Can now add a second email address to your account and delete one of 
your email addresses
- Reset password now works
- Resetting the password of an account without a password set will set 
one
- Email templates overhauled
- Login tokens limited to close previously devastating ($800 database 
bill) security hole
- Login with REST API now works
- Once logged in, authentication of API calls with token works
- Creatures can now be fetched using the API

app/imports/api/engine/computation/writeComputation/writeScope.js

@@ -1,5 +1,10 @@
 import Creatures from '/imports/api/creature/creatures/Creatures.js';
 
 export default function writeScope(creatureId, scope){
+  // Remove large properties that aren't likely to be accessed
+  for (const key in scope){
+    delete scope[key].parent;
+    delete scope[key].ancestors;
+  }
   Creatures.update(creatureId, {$set: {variables: scope}});
 }