DataTicker crashes TRView paint method

[Robert Leach]

Tree highlighting on hover stops working. Initially had reopened #59 (highlight subtrees on hover), but isolated the issue to the dataticker, which should be a very trivial fix, so creating a separate issue.

[Robert Leach]

I don't know if it's related - I think it is, but if you hover over the window's title bar, a continuous stream of error messages goes into the log window.

[Robert Leach]

Issue #144 was marked as a duplicate of this issue.

[Robert Leach]

Issue #145 was marked as a duplicate of this issue.

[Robert Leach]

Issue #150 was marked as a duplicate of this issue.

[Christopher Keil]

resolves #151; TreePanels do not send content via their getStatus() methods anymore, but instead an empty String array of size 3 (DataTicker elements); ArrayIndexOutOfBound exception does not happen anymore and paint() methods proceed as normal, not crashing the panel

→ <<cset 43d879f5ecdf>>

[Robert Leach]

Works great!