Categorize contact form

Card: https://trello.com/c/uaS8fKjY/248--

Theme PR
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 - https://bitbucket.org/Edraak/edraak-theme/pull-request/7

What to Test
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 - Contact us works in AR and EN
 - Both forms should send emails
 - Transifex scripts should work fine like in [Edraak Theme i18n Workflow](https://trello.com/c/EvCldGAj)