[x] [2655] Rename Delete menu in bookmarks

[xeo]

In bookmarks tab in ML:
- rename "Delete selected" to "Delete selected bookmark", because it is not clear whether a file or just a bookmark will be removed
- rename "Delete all files" to "Delete all bookmarks", because it suggests that the files will be removed physically



[EDIT]
sorry, please move the topic to the Windows section

[Artem]

I'll rename "Delete All Files" to "Delete all entries". I cannot use "bookmark" suffix here, because it general commands for music library.