Fix for null series_index. iOSRA issue #46 https://github.com/GRiker/calibre-ios-reader-applications/issues/46
Added proper error handler for empty pubdate
Tweaked has_password diagnostic
Improved diagnostic reporting for books displayed in BookStatus, cached books.
Improved handling for missing series_index, pubdate
Improved error handling for communication problems. Update metadata dialog shown with frame.
Fixed pubdate comparison. Initial improvements to _show_command_error(). Added show_command_error call to _update_marvin_metadata().
Calls to _show_command_error added for _update_locked_status, _update_global_collections, _update_calibre_metadata, _inform_marvin_collections, _generate_deep_view, _calculate_word_count, show_html_dialog.
Removed intentional error in _issue_command
Report current_library_name when action:library_changed() called
Merge branch 'master' of https://github.com/GRiker/calibre-marvin-manager