I fixed the error messages on the Suggestion and Correction forms with outdated contact information
I updated the post schema for Suggestions so that it can handle null values (TypeScript was throwing errors)
I patched the data from the Correction form to actually send the data of the corrected stakeholder, in addition to the tipster's information (it was not doing that before)
I updated the naming convention of the Correction form to be less confusing
Closes #2064