Update System & Clan homes

Added new clan home system. Added new /clan sethome|home commands. Added new PlaceholderAPI placeholder %clansLite_clanHomeSet%. Added new UpdateChecker system. Added new permission nodes clanslite.update & clanslite.*. Updated Clan.java to include clan home values. Updated ClansStorageUtil.java to include new methods to store and retrieve clan homes. Added new boolean method ClansStorageUtil.isHomeSet. Added cool down system to the /clan home command, configurable from the config.yml. Updated messages.yml with new values for new features. Changed PlaceholderAPI Expansion version to 1.0.1-BETA. Change plugin version to 1.0.1-BETA.