* /resouces/olddays/lang/es_ES.lang: Fixed FIXMEs.
   Replaced all the "sólo" for "solo", this due to the latest DRAE's rules advising against its use.
   Replaced the word "zombie" for "zombi" and "zombies" for "zombis".
   Uppercased words "Slime", "Enderman", "Ender", "Creeper", "Cubos de Magma" and more mobs name.
   Uppercased "Mod", "Paquete de Texturas" and "Pack de Texturas" words.
   Replaced "removido" for "quitado".
   Fixed some spelling errors.
   Replaced "Lanzamiento" for "Release".
   Fixed some «queismo» mistakes.
   Various.
Merge branch 'master' of https://github.com/Exalm/Minecraft-mods
Merge pull request #119 from ficion/master

Updated Spanish locale