Replace Bootstrap tour by IntroJS in tutorial

[llaske]

Bootstrap tour is the library use for writing tutorial. The library is no longer maintain and doesn't support recent version of Bootstrap. So we decided to replace it by another libraries named IntroJS.
IntroJS provide similar features and a lightweight UI.

This replacement has be done in Sugarizer app. See here to learn how.

The idea is to replace it in Sugarizer Server Dashboard.

[parteekcoder]

@llaske is this issue still opened as there is one merged PR mentioned here

[llaske]

@parteekcoder yes the issue is still open, the PR was not directly related to the issue.

[rockharshitmaurya]

hey, @llaske I have fixed this issue in PR:#395. Please review it and let me know if any changes are required

[llaske]

Thanks @rockharshitmaurya .
There is an issue on the Stats screen.

Plus the CI/CD fail due to lot if errors in eslint.

[llaske]

Fixed in #417