When opening the SingleSelectForm and there was already an index specified to select when opening the textbox, we now also scroll to the given item

Crosses item off the TODO.txt which was poorly described; this commit is what I actually meant when I wrote the TODO.txt item
Add a new class called XToolTip which is based on the ToolTip class and splits the width of the tooltip in chuncks of 60 characters (without cutting in the middle of words)
Tooltips are now displayed a lot longer than they would otherwise