Revert "New topic for filtering uploaded files, change add file to upload file, edits to chapter"

This reverts commit eeea62bb99b94ddb5b1c825b78d2a6c0261f0e67.
Revert eeea62b..8e5ec41

This rolls back to commit eeea62bb99b94ddb5b1c825b78d2a6c0261f0e67.