Additionally 2 Arch_Window bugs were fixed:
* If the W1 value was changed the box tracker was not repositioned relative to the cursor.
* The WindowColor was not applied because of a typo in the code. De current default color is quite dark BTW.
Note that all dimensional values that were not really defaults, but just the last entered values, have been removed from preferences-archdefaults.ui. As a result the layout looks a bit strange. That will be improved in a next PR.
Remove unnecessary comments; as long as the variables
and functions have a clear name, they are self documenting,
so they don't need additional comments.
When getCurveSet() is called on an unsupported entity, it runs into a
NameError exception because elts is not defined. Instead print a message
and return gracefully.
This is in line with overall behaviour of the importer: Ignore
unsupported elements instead of thowing errors.