lastgenre: tree/whitelist: UK/Breakbeat Hardcore

Also changes decided during PR discussions and more research.

beetsplug/lastgenre/genres-tree.yaml

@@ -254,7 +254,6 @@
         - acid breaks
         - baltimore club
         - big beat
-        - breakbeat hardcore
         - broken beat
         - florida breaks
         - nu skool breaks
@@ -295,7 +294,6 @@
             - darkside jungle
             - ragga jungle
             - oldschool jungle
-            - uk hardcore
         - raggacore
         - sambass
         - techstep
@@ -352,6 +350,7 @@
     - hardcore:
         - bouncy house
         - bouncy techno
+        - breakbeat hardcore
         - breakcore
         - digital hardcore
         - doomcore
@@ -363,6 +362,7 @@
         - makina
         - speedcore
         - terrorcore
+        - uk hardcore
     - hi-nrg:
         - eurobeat
         - hard nrg