Bot may not show mentions at the start of the tweet.

[LuisMayo]

In order for the bot to avoid putting @/user at the beginning of each text we're stripping all mentions at the beginning of tweets.

However, this does not discriminate between new mentions (which we should be showing) and reply mentions (which we should not).

Example:
Video: https://twitter.com/aceCourtBot/status/1424712034034257923
Wrongly represented tweet in that video: https://twitter.com/Saadiyah21/status/1424398876824514561