Pull Requests: Sanitize to user provided fields

[N-o-Z]

We should sanitize any user inputted fields in pull requests such as Title and Description to avoid potentially malicious attacks

[arielshaqed]

In case this is not part of the plan: It's cool to do it on the backend, but please (also) protect when inserting the user provided fields into the DOM. So it really needs to be based on an allowlist rather than on a blocklist. That list can come (and probably should) from an existing React library, of course.

[N-o-Z]

@itaigilo I think this is something we can do this current sprint. WDYT?

[itaigilo]

@itaigilo I think this is something we can do this current sprint. WDYT?

Yeah, I guess so.
Will do it on my next workday.