There should only be one reply button on a message boards page at a time

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: Master
• Fix Version/s: 7.3.10 DXP GA1, Master
• Component/s: Message Boards
• Labels: None
• Fix Priority: 4
• Git Pull Request: https://github.com/adolfopa/liferay-portal/pull/1405

Steps to reproduce:

1. Add a message boards thread
2. Add a message boards reply
3. When the replies form opens up, note the following:

Expected result:
The publish (should probably be renamed to "Reply") button is the only button that should appear on the screen.

Actual result:
Two buttons, Publish (under the form) and Reply (outside the form) appear. Clicking on the Reply button triggers reloads the page.