Add modal option to ProgressMeter

git-svn-id: svn+ssh://svn.code.sf.net/p/gramps/code/branches/maintenance/gramps34@21661 4ae1f11a-8b86-4847-b8af-ab372f36d1fd
Add methods used for modal ProgressMeter to CLIDialog

git-svn-id: svn+ssh://svn.code.sf.net/p/gramps/code/branches/maintenance/gramps34@21664 4ae1f11a-8b86-4847-b8af-ab372f36d1fd
ignore any CLI book report "item" which crashes

git-svn-id: svn+ssh://svn.code.sf.net/p/gramps/code/branches/maintenance/gramps34@21667 4ae1f11a-8b86-4847-b8af-ab372f36d1fd