Security fixes (#32)

* Generic Object Injection Sink

* (fix) "Character" is not defined.

* added eslint

* improve code quality, use refactored function

* (fix) eslint jest

* "Character" is not defined

* removed unused file Compare.js

* (fix) PointsUsed is not defined

* (fix) eslint moans jsconfig

* turn off "no-prototype-builtins"

* push code coverage

commands/Chants.js

@@ -16,7 +16,7 @@ module.exports = {
             if (docs.length === 0) {
                 return message.reply(findMessage('NOENTRY'));
             }
-            Character = docs[0].character;
+            const Character = docs[0].character;
             if (!Character.hasOwnProperty('chants')) return message.reply(findMessage('NO_CHANTS'));
             if (args.length === 0) {
                 const Embed = new Discord.MessageEmbed()