Clear images when a tab is emptied, don't rename fits to "" if user cancels renaming

controller/fit.py

@@ -42,7 +42,7 @@ class Fit(object):
     def newFit(self, shipID, name):
         fit = eos.types.Fit()
         fit.ship = eos.types.Ship(eos.db.getItem(shipID))
-        fit.name = name
+        fit.name = name 
         eos.db.saveddata_session.add(fit)
         eos.db.saveddata_session.flush()
         return fit.ID