FileNotFoundException when executed under Tomcat from Eclipse

When Executed under Tomcat started from Eclipse with "Serve modules
without publishing" opiton turned on, ClassLoader.getResources() method
returnes the same resource two times: first with incorrect path and second
time with the correct one. This change ignores any resources which throws
FileNotFoundException when opened.

Fixes: #5
Change-Id: I89c281db81a38b65b66d030ebec04ecbbcbbba9f
Tested-by: Mr. Jenkins
Reviewed-by: Sławek Piotrowski <sentinel@atteo.com>