Fixed possible XSS when getting real-time data into the HTML report.
Fixes
</td>
{{#cells}}
<td class="{{className}}" {{#colspan}}colspan="{{colspan}}"{{/colspan}}>
- <span class="value">{{{value}}}</span>{{#percent}}<span class="percent"> ({{percent}})</span>{{/percent}}
+ <span class="value">{{value}}</span>{{#percent}}<span class="percent"> ({{percent}})</span>{{/percent}}
</td>
{{/cells}}
</tr>
