styling. Stock module fixed a bug where prices were updated from
base_price but percent was set to 0, which is used elsewhere to
mean no markup applied. Account module fixed a few bugs sharing
information when there wasn't permission to edit it. Also
refactored some more code out of Callback function.
Other changes are from renaming return value from mysqli queries to
$mysqli_result due to conflict with $result variable which is also
used for other purposes.