Added dummy questions in json format

Since the backend hasn't been started yet.
Merge branch 'master' into dynamicQuestions
Added async loading of dummy questions.
Removed unnecessary questionTotal var
Changed radio-button name to id

To obtain a reference to these elements when loading
the questions dynamically.
Added dynamic loading of questions and choices
Added timed delay to hover transitions
Placed all choice elements in an array

For easier referencing when trying to randomize the choices.
Randomization of choices
Changed all on-tap callbacks to use onXXX naming

For consistency and code readability
Removed exam-form static placeholders.
check to see whether user submitted right/wrong choice
Selected choice is remembered when browsing questions

When moving to next or previous questions, the selected
choice is remembered for each individual question
and is reselected when loading the question.
Added timed delay to radio-button hover transition
Added hover-end timed delay for fab and btn transitions
Changed universal font-weight to 300
Merge branch 'master' into dynamicQuestions