Hi Bobby,
1) is there a way to manually add a donation. We had a couple of cash donations that we want to add to the campaign so the totals will be accurate.
You can do this in a roundabout way by enabling the Offline payment gateway. Then you can go through the donation process for each of the cash donations you received.
We are also working on an extension that will allow you to add donations manually via the admin area.
2) is there a way to totally delete cancelled donations? There are several tests in our database and I would like to remove them.
Not at this stage. Good idea though. Slated this for the next release of Charitable: https://github.com/Charitable/Charitable/issues/15
Cheers,
Eric