#30 Trim doesn't remove windows carriage returns

[bobby_peru]

On release 0.9.3, StringUtil.trim() doesn't seem to
remove all carriage returns. When trying to trim text
input in a TextField, the carriage returns were still
there. It seems to be a Window's carriage return and
line feed problem. Making sure to add the "\r" as a
character to strip seems to fix it (see the attached
proposed patch).

Note I've replaced the duplicate "\n" with the "\r".

Bobby

[bobby_peru]

Proposed StringUtil.patch