Following up the previous commit which replaces "[copy/paste] buffer"
with the newly-introduced "internal clipboard", this commit adds
"internal" before existing occurrences of "clipboard", when not
dealing with the system clipboard.
This distinction is useful so that the user will not expect something
copied to the clipboard (say a node or object) to be pastable to
another application.
I took the opportunity to slightly rephrase some descriptions closer
to the human interface guidelines, like using the imperative and
articles.
Review: #106060
To refer to a temporary buffer used to store data to recall later,
Blender still uses the term "[copy/paste] buffer]. But a buffer is a
technical term, most often referred to using the metaphor of a
"clipboard" in applications. Changes from "[copy/paste] buffer" to
"clipboard" was already started in some previous commits
da6d6f99a8, 14b60c3a1c. This commit should tackle the remaining
occurrences.
However, the "clipboard" is usually the system clipboard, used to
carry data across applications. To avoid confusion, this replaces
"clipboard" with "internal clipboard".
This commit affects mostly animation (poses, keyframes) but it also
involves one change for Freestyle line styles, and one for the mesh
normals in modeling.
Review: #106060
Damien Picard