WW-4193 - Patch by Christoph Nenning
With this patch it is checked if devMode is active and if logMissingProperties is enabled before the exception is logged
- refactored shouldLogNoSuchPropertyWarning() to shouldLogMissingPropertyWarning() and using it to handle MethodFailedExceptions.
- updated void handleOgnlException(String expr, Object value, boolean throwExceptionOnFailure, OgnlException e) to use it.

git-svn-id: https://svn.apache.org/repos/asf/struts/struts2/trunk@1520763 13f79535-47bb-0310-9956-ffa450edef68
Added .gitignore to support users with git-svn and working on github mirrors

git-svn-id: https://svn.apache.org/repos/asf/struts/struts2/trunk@1520781 13f79535-47bb-0310-9956-ffa450edef68
Merge remote-tracking branch 'upstream/trunk' into trunk