The messageformat and tohtml params have been added to the addDiscussionPost
method to send the original format the contents are written and to force
to convert them from "messageformat" to HTML.
* Basic functionality for an inpage reply. With advanced link that takes you to the previous "Reply page".
* Updated behat function to handle the additional step
* Updated templates to have some identifiers on where one is storing the replies post
* Updated discussion_post to use the new vault functions to get the corresponding records
* Jumpto newly created post
