In the context menus inof the Document Tree View and in the Project Plugin,
adapt the caption of the menu item which copies the path to the file
match the wording of the context menu of the Tab bar.
Though 'filename' technically means filename including path, I think
'Copy path' is more understandable (though it could mean 'copy the path
of containing folder'). Do we have a common guideline here which term to
use?
In contrast to Kate's Tab bar, e.g.plugin, in the KDevelop's Tab bar the item
is named 'Copy Filename' which also copies the filename including fullof the Project plugin
pathand the Tabbar context menu, use the term Use 'Copy File Path' consistently.