Fixed a mistake in Html5 converter API doc
Added unit tests for the HTML5 converter
EZP 21054: Added (failing) unit tests
Fix EZP-21054: Anchor tag is not transformed by xsl
EZP-21245: Make it easier to register eZXML custom tags in main XSL stylesheet

Added default implementation.
EZP-21245: Added semantic configuration
EZP-21245: Changed semantic config to be under fieldtypes.ezxml.custom_tags
EZP-21245: Set getXSLTProcessor() to protected + registered PHP functions