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[pols1337]

Small but potentially helpful suggestion for UI: In the category manager (Files > Category), you differentiate the text on the "Update / Create category" button:

-- If an admin is creating a new album, the button should say "Create category." 
-- If an admin pre-selects a category to edit, the button would say "Update category."

This clarifies the action.  In particular, it ensures that the admin is aware that he might potentially be overwriting an existing category description and title when he really wants to create a new category description and title.