📝 Cogs and utils

Improved code style and added comments and docstrings to cogs and utils.

resources/longStrings.json

@@ -0,0 +1,4 @@
+{
+    "missing parameters" : "Missing command parameters. Try using `!help [command]` to find out how to use the command.",
+    "Can't log in": "Could not log in. Remember to write your bot token in the credentials.txt file"
+}