eu.etaxonomy.taxeditor.product, eu.etaxonomy.taxeditor.feature/feature.xml, eu.etaxon...

eu.etaxonomy.taxeditor.product, eu.etaxonomy.taxeditor.feature/feature.xml, eu.etaxonomy.taxeditor.feature.platform/feature.xml : commented out license text to prevent extra popup on update
plugin(_de,_en).properties : added license info to productBlurb used in the About popup
ApplicationWorkbenchWindowAdvisor, IPreferenceKeys, TaxonomicEditorGeneralPreferences : removed preference for allowing update checks on startup as this is already provided by rcp
ApplicationWorkbenchWindowAdvisor, ApplicationUtil, P2Util, UpdateHandler : changed setting of default repositories to make sure that they are set on startup