TemplateHandler: Process template parameters while waiting for template
expansion

Change-Id: I59205bbbbeb11688db7fa339f2d56294dc95cdab
TemplateHandler: Add a flag to skip processing tpl params to HTML

New flag in localsettings addHTMLTemplateParameters, defaults to
false. When true, template parameters are processed to HTML.

Also reverted parserTests and blacklist so that tests pass without HTML
parameters.

Change-Id: I71b6666787fcedca7e0729eeeba5eaa237d84867
Move data-mw-arginfo to dataAttribs

Change-Id: I1f26222a933341b2746008a8f1f23282c478cb7d