now showing a tutorial icon in topology list
changes on the basic tutorial
fixes
on closing a tutorial, the user is now asked whether to delete or keep the topology.
fixed link to image
enhancetable should no longer sort case-sensitive
moved location of tutorial description; started working on data access tutorial
(belongs to last commit)
continued working on data access tutorial
fix: now correctly showing buttons when loading at the last step of a tutorial
continued working on data access tutorial
small performance improvement on loadTutorial
created some help functions for easier programming of tutorials