#1034 Content-type for ~./img/spacer.gif is wrong with Apache

[Tom M. Yeh]

Content-type for ~./img/spacer.gif is wrong with Apache and jessionid is part of URL.

For example, the following's content type is text/plain
http://www.zkoss.org/zkdemo/zkau/web/zkex/zul/css/layoutmoz.css.dsp;jsessionid=F068F31F8473190F90870A8DB2D5A651_zkdemo

[Tom M. Yeh]

Logged In: YES
user_id=91099
Originator: YES

Fixed since 6/20
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Cause: Apache sets the content type if not set by Tomcat (actually ZK), but Apache cannot recognize URL with jsessionid