Categorical filters need tooltips when values are truncated

[alexsielicki]

Values could be impossible to discerns when truncated. We should add tooltips when the values are too long to display in their entirety.

[alexsielicki]

@pjcross, what do you think? Should I fix this while I'm in this part of the code already?

[pjcross]

yes.

[alexsielicki]

I made it so the tooltips only show up if the label has been truncated. When the full label is visible, there is no tooltip. This is consistent with how the SlickGrid table works.

[pjcross]

perfect