Added files for cards and certificates
Added Slider, Spinner and Info Question cards

Changed the UI Color, and align everything into the center. Also fix
the alignment of slider value and slider function.
Improved cards UI, fix slider function

The slider now is fully functional. It does slide to the correct
position as the bar is being dragged.
Improved cards UI design, trying to make it looks like a wooden board.
Change slider bar color.
Add next question function.

It will now show next button if there’s more questions forms.
Range cards merge. Multi questions in one form.

Merged slider card and spinner card into one. Now use feature variable
to specify which one to insert.
Multiple questions now can be shown in one form. Simply passes in all
questions in content variable.
Changed javascript file names

Cards are functional now. The first question in the health element now uses cards.
Merge branch 'rohitj_22_display_cards'

Conflicts:
	site_media/javascript/javascript.js
Merge branch 'master' into michaelize_32_finance_loan_element

Conflicts:
	site_media/javascript/javascript.js