Merge pull request #330 from criedel/master

Fix for #318
Wrong char in the PlaceholderDemo template
prepare 3.4.0 snapshot
Update to Next snapshot version
Issue #279 Tapestry5 AjaxUpload doesn't delete temp file after file upload in Chrome
Issue #279 Tapestry5 AjaxUpload doesn't delete temp file after file upload in Chrome
Update toAbsoluteURI to toURI
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