Tworld now notices data changes.
Feature for adding new properties.
Randomize generated key names after a while.
Change the "save" button to "delete" when deleting.
Comments.
Remove log line.
Build the colgroup as part of table construction. Also,
use find() instead of children().
Move headers into the table.
Move the type pop-up into its own column.
Renaming of prop keys.
Delete by property id, the way it should be.
Put table headers in the table.