Brief Javadoc for Pattern class.
Removed unused import.
Moved all code into de.sonumina.simpedance packages.
Moved N_ i18n method into a separate class.

We use a static import now to make it available.
Moved _ implementation from Ballroom to I18n.
Organized imports.
Removed unused class variables.
Import i18n methods everywhere.
Removed unused variable.
Organized imports.