Add additional info about horse speed in Beast Lore

An additional string containing info about the horse's movement speed (in blocks per second) is now concat'd to the end of the Beast Lore info. Also, added a Combat.BeastLoreHorseSpeed locale string to service this info.

src/main/resources/locale/locale_en_US.properties

@@ -555,6 +555,7 @@ Combat.ArrowDeflect=[[WHITE]]**ARROW DEFLECT**
 Combat.BeastLore=[[GREEN]]**BEAST LORE**
 Combat.BeastLoreHealth=[[DARK_AQUA]]Health ([[GREEN]]{0}[[DARK_AQUA]]/{1})
 Combat.BeastLoreOwner=[[DARK_AQUA]]Owner ([[RED]]{0}[[DARK_AQUA]])
+Combat.BeastLoreHorseSpeed=[[DARK_AQUA]]Horse Movement Speed ([[GREEN]]{0} blocks/s[[DARK_AQUA]])
 Combat.Gore=[[GREEN]]**GORED**
 Combat.StruckByGore=**YOU HAVE BEEN GORED**
 Combat.TargetDazed=Target was [[DARK_RED]]Dazed