Split dependencies up per addon.

Change-Id: I0085a12735abb6cb1a94e5babd20d68df7603750
Reviewed-on: http://gerrit.dmdirc.com/3213
Automatic-Compile: DMDirc Build Manager
Reviewed-by: Chris Smith <chris@dmdirc.com>
DI the now playing plugin.

Change-Id: Ibe9c5f044aad1d51fc31a3bd5c9c7a98589d7018
Reviewed-on: http://gerrit.dmdirc.com/3214
Automatic-Compile: DMDirc Build Manager
Reviewed-by: Chris Smith <chris@dmdirc.com>