Made changes to loading/methods in mcRP

* Added command "class" which wasn't added before by mistake
* Added reloadCharacters() in mcrp to prevent NPE while reloading
* Edited disablePlugin() to provide reason for disable and the logging
level.
* Edited Registering SkillManager, RPClassManager to register after
"enable" check to prevent NPE
Addtions/Edits to mcRP managers - See description

* CharaterManager:
** Added getCharacter(Player player) to make code less messy when
loading a Character for player object
** Added reloadCharacters() to prevent NPE on reload
* CommandManager:
** Added "class" command to mcrp subcommand
** Edit changed array position of current commands
* ConfigManager:
** Edited all disablePlugin() to disablePlugin(level, reason) to support
change in method (NOTE: Untested)
* RPClassManager:
** Added debug message while loading classes
** Edited getRPClass() to support case insensitive
* SkillManager:
** Added classSkills HashMap
** Added debug message while loading skills
** Added addClassSkills(), getClassSkill(), getClassSkills()
** Edited executeSkill to support Class based skill execution
** Edited registerSkills() to registerSkill() to make more sense for its
actual function
** Removed "plugin" parameter for skills because it is not needed
anymore
Addtions/Edits to Subcommands ChangeLog:http://pastebin.com/MfDpkq6A
Edited all skills to now use execute()

* Edit fixed spelling error of execute(). Was exceute()
Edited Skill, ClassType Added SkillEnum

* Skill:
** Added run() and respective documentation for both run(), execute()
** Added getEnum()
** Edited getSkillType() to getType()
** Edit Changed all colors to 'public'
** Edit 'plugin = instance changed' to 'plugin =
mcrp.getPluginInstance()'
** Edit made @SkillInfo annotation public so ClassSkills can see it
** Removed unnecessary 'mcRP' parameter
ClassType:
** Added Legacy Enum (Doesnt do anything yet)
SkillEnum:
** Added SkillEnum(based on bukkit's Material enum) and respected Skills
** Added enum for coming up skills for Warrior and Bowman as well