Normally, pure text buttons have no padding at their edges so they
align with edges of buttons, see D9058. However, in several cases
there are labels aligned to the right side of a list widget row,
so they're missing padding against the right edge.
The fix is to use emboss = 'NONE' for such labels, which changes
the drawing style, adding padding on the right edge. (Normally so
labels aligned with the text from non-embossed buttons). This is
not necessarily intended, but it works properly.
For more information, see the revision.
Differential Revision: https://developer.blender.org/D9874
There is a list of attributes, along with operators to add and remove
attributes. For adding, there are a few standard attributes that can be
added quickly, as well as a popup to create a custom attribute.
Ref T76659
Differential Revision: https://developer.blender.org/D8636
