Replace nodrop -> notallow to unify cursor themes (#452)

* Replace nodrop -> notallow to unify cursor themes

X11 cursors are the only that use "nodrop" instead of "notallow" cursor.

* Additional f

Replace nodrop -> notallow to unify cursor themes (#452)

* Replace nodrop -> notallow to unify cursor themes

X11 cursors are the only that use "nodrop" instead of "notallow" cursor.

* Additional files

* Get rid of duplicated cursors

(cherry picked from commit 2fb96a1731e4dafc29c7e676cb968cf2a7ec09e7)

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