Extracted "html source" => "Textile" transformation to a class (TextileConverter).
Added TextConverter UnitTest class.
Changed how we modify the html source to use Nokogiri instead of regular expressions.
Modify Redmine::WikiFormatting::Textile::Formatter to avoid the filtering of styles. ref: http://www.redmine.org/issues/2416.
Silencing UTF-8 warnings on Rails 2.3 with Ruby 1.9
Fixing enhanced incoming unit tests.

- Added one more new line before headers.
- Prevent new lines inside span styling "%{}"
Travis config updated
Merge remote-tracking branch 'origin/email-enhancements' into email-enhancements
Merge errors fixed
Plugin gemfile updated
Gemfile.lock updated
Changes to core files reverted
Merge pull request #7 from tipitnet/feature-emailenhancements

Feature emailenhancements