Refactoring: rework race and character_class.
Refactors Rule, RuleProcessor; Adds ability to revert rules by their :stage number.
Another portion of refactoring.
Bumps up ruby version.
Adds level stage to UI; implement revert ability to race and class stages.
Refactors Angular controllers and views; Create ability to select characters for edition.
Modifies custom ability scores generator. Continue to add specs.
Adds specs for custom ability scores generation.
Temp commit. Implementing new desing.
Migrates to ruby 2.0.0-p247 :)
Implements level and race selection with new desing.
Refactors and improves ability score UI.