Make t function return a span element with a lang attribute unless html: false is specified in the options (re: #7963)

Update `text` functions to `html` to support inserting the `span` elements
Specify `html: false` for various instances where a `span` is not desired, e.g. `placeholder` and `title` attributes

modules/validations/help_request.js

@@ -44,7 +44,7 @@ export function validationHelpRequest(context) {
                 .enter()
                 .append('div')
                 .attr('class', 'issue-reference')
-                .text(t('issues.fixme_tag.reference'));
+                .html(t('issues.fixme_tag.reference'));
         }
     };