Option to disable online lyrics-search

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I would like to have an option in the settings to disable the online search for lyrics.

Background:
I have almost all lyrics that can be found in the WWW meanwhile embedded in the unsyncedlyrics tag, so that subsonic can read them locally.
In cases in which the unsyncedlyrics tag is empty, Subsonic searches online at Chartlyrics and finds nothing or if it really finds something it is a 100 % wrong result.
Showing these wrong results is unneccesary and annoying.