Version 3.1.1 (2012-04-25)
	fixed double ID's of form-elements in HTML-output
	added support to upgrade the plugin
	Form-elements are now marked as error on invalid login
Version 3.1.0 (2012-01-01)
	applied new directory-structure
	applied requirements for the new Admin-plugin
	improved content-editing interface
Version 2.1.0 (2010-08-26)
	initial release