new stories button alignment fix

[PriyanshuGarg26]

Issue Number

fixes #157

Describe the changes you've made

Add btn-text-center class name in + New Story button in Navigation.js and add styles in navigation.scss file.

Describe if there is any unusual behavior (Any Warning) of your code(Write NA if there isn't)
NA

Checklist

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• All new and existing tests passed.
• The title of my pull request is a short description of the requested changes.

[kunal00000]

Hello Priyanshu,
You need not delete config.temp.json file instead you should just copy and rename the new file to config.json in ./src directory and define your configurations there.

config.temp.json file is template for config.json.