Better nickname support

- Username field will not be overwritten with the nickname.
- Mentions work again!
- User chip will show nickname instead of username if present
- Authenticated embed users sidebar nickname support

discordbot/titanembeds/database/__init__.py

@@ -69,8 +69,6 @@ class DatabaseInterface(object):
 
     def get_message_author(self, message):
         author = message.author
-        if hasattr(author, 'nick') and author.nick:
-            author.name = author.nick
         obj = {
             "username": author.name,
             "discriminator": author.discriminator,