Allow displaying html tags in step title field

This change is allow to display tags like line-breaks (<br>) in step title field. 
(this realisation based-on type of properties field in testcase.html template)

Example:
- in your code of tests:
@Step("<br>Multi-line<br>step<br>")

- in report it will be:
[15:13:03.670] 
Multi-line
step
(1 attachment)