Fix: move to external module

htdocs/includes/modules/modMultiCompany.class.php

htdocs/includes/modules/modWorkflow.class.php

htdocs/workflow/admin/workflow.php

htdocs/workflow/class/workflow.class.php

htdocs/workflow/img/object_workflow.png

.../triggers/interface_modWorkflow_WorkflowManager.class.php

htdocs/workflow/tpl/add-workflow.tpl.php

htdocs/workflow/tpl/admin-workflow.tpl.php

htdocs/workflow/tpl/edit-workflow.tpl.php

htdocs/workflow/tpl/index.php

htdocs/workflow/tpl/view-workflow.tpl.php