OO-848: enhance the interface of course nodes to do a post copy processing different from the import one

OO-1472: extended EnrollmentNode configuration. changed EnrollmentManager, RunController and BusinessGroupTableModel to handle the new configurationState

no-jira: bugfix, changed from replaceAll() to replace() because there is no need for a regular expression which leads to a redscreen when a bad groupname is given

OO-1477: catch if the import doesn't return a new repository entry and handle it with a warning message

OO-1475 generalized pointer change in panel titlel in repo and added same icon to other collapsible panels

OO-1152: implemented export/importNode methods to add the project data to the exportprocess of the projectbroker