Popup Quiz App

In this project we will demostrate the following:

Material Design
- Adding Material Design to the project
- Defining A Custom Theme and some CSS Variables to be consumed in our components
- How to manage the application layout using CSS Grid and Flex
NgRx
- Adding NgRx Store to the project
- Defining the main state
- Defining the possible actions
- Defining the reducers
- Defining Selectors for various aspects of the state
- Consuming the state in the components

Commits

#	Link	Description
1	Initial application	Created an empty application using the angular CLI: `ng new redux-pop-quiz`
2	Added Material Design	Added angular material using the cli: `ng add @angular/material`
3	Custom Theme	Defined the theme palettes in partial `_common.scss` and generated the material styles in `styles.scss`
4	Tested theme	Used some angular material components like icon and button to test the new theme
5	Grid, Flex layout	Created layout where each element is either grid or flex for easier layout management
6	CSS Variables	Added CSS Variables to the `styles.scss` file and tested some of them in the app component
7	Toolbar	Added material toolbar with logo and caption
8	Progress Component	Added progress component, that presents a list of indicators telling which questions were answered correctly, incorrectly or not at all
9	Question Component	Added question presenter component, that presents a question, a list of answers, and allow the user to pick one