Lps 36203 weblogic web content

Hi Igor!

Seems we knew how to fix this issue (https://issues.liferay.com/browse/LPP-6121?focusedCommentId=273591&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-273591) but we didn't create a patch nor update weblogic.xml accordingly.

It was an issue with woodstock libraries, that are already bundled in weblogic, so the solution was to use Liferay ones.

Seems better solution than prefer-web-inf-classes  because it avoids another unexpected errors (and probably that's why that didn't go into sources).

Thanks!