Add the ability to comment on specific parts of a PAF/SOW

[wes-otf]

Staff voiced a want to be able to comment on specific parts of a PAW/SOW and do so while they read through/review it. @frjo & I had discussed potentially adding a mini comment view along the side of those documents but linking to specific sections of said documents might require a larger implementation

[wes-otf]

The current flow happens in Google Docs so folks were using that as the system of reference for comments

[frjo]

We can not reimplement Google docs inside Hypha. This needs investigation to implement something that is truly useful for staff while keeping it simpel.