Use Redcarpet for markdown formatting of user input.
Merge pull request #176 from cyberarm/questions_formatting

Use Redcarpet for markdown formatting of user input
Restrict access to MailerController actions
Merge pull request #177 from reprah/add-mail-auth

Restrict access to MailerController actions
Fix pagination links for support questions
Merge pull request #178 from reprah/fix-pagination

Fix pagination links for support questions
Improving css
Merge remote-tracking branch 'mleung/master'