update javascript files to v2.3.0
update docs to v2.3.0
update symlinks and rake task to v2.3.0
update sass files to match bootstrap v2.3.0
update Gemfile.lock to latest sass version 3.2.5
build bootstrap v2.3.0 from SASS files
Merge pull request #54 from m5o/2.3.0-wip

update to match v2.3.0