* Simplify select generation * Refactor text generation * Change optional argument * Remove query-parser-templates.html * Simplify prepare * Simplify preview
* Rename TemplateHandler to HtmlTemplateCollection * Rename _templateHandler to _templates * Allow creation from both string and element * Simplify setup of templates, don't throw errors on invalid ID
* Rename files to better match class name * Don't pass setContent to QueryParser; use a generic event instead