Use markdown syntax for the question & answer fields

[punitrathore]

We want the question and answers to be able to support markdown formatting.

User Story

• As a user creating a question, I should be able to write my question(& answer) using the markdown syntax.
• I should also be able to add code snippets to my question & answers.
• As an interviewee when I see the question, it should format the question(written in markdown) correctly.

Look at the marked library - https://github.com/chjj/marked