Add field to Infraction model for jump link to infraction message.

[vivekashok1221]

Relevant bot issue: bot#2329

[jchristgit]

Don't we delete the message from the bot about infractions manually created? Or was this changed at some point?

[vivekashok1221]

I'm not sure what you mean.

[jchristgit]

As far as I remember, when mods infracted someone, the message of the bot confirming the infraction would get deleted after a moment. A quick search seems to suggest this was changed though, since the bot messages persist

[vivekashok1221]

Oh, okay.
We will be storing the link to the mod's message here though.