Update section: add ability for text strikethrough + Word doc attachments

We try to use the Updates section in Workfront in place of email. However, WF lacks functionality in two areas: text input & attachments.

Text: there is no strikethrough ability (among others). This is good to have when discussing bodies of text to edit.

Attachments: WF allows for picture file attachment, which is very handy. However, it doesn’t allow for Word file attachment. Yes, there are other places to load up files, but switching over to other pages & copying/pasting links is slower, and it adds up over time.

Please consider adding these, as it's difficult enough to steer people away from email and into WF.