Replaced bootstrap-tour with introJs tour library in Tangram activity

[abhishek-sultaniya]

Fixes: #1090
Replaced bootstrap-tour with introJs library in Tangram Activity.

[llaske]

There is lot of change in activity.js not related with the issue (quote replacement, coma added, ...).
You should disable automatic change in your IDE to keep only changes need for the PR.

[abhishek-sultaniya]

OK,will take care of this from next time.
In recent commit I have corrected it.

[llaske]

I don't see any change 🤔

[abhishek-sultaniya]

I have made changes in activity.js file.Should I change indentation in any other file?

[llaske]

@abhishek-sultaniya I mean this change:

[abhishek-sultaniya]

Yes,I have corrected this in last commit.

Now its showing only 8 files have been changed and it does not include activity.js

I also checked with original activity.js,its matching.

[llaske]

@abhishek-sultaniya you're right it's fixed in activity.js.
Could you also fix indentation style in SugarTutorial.js? Was TAB and you replaced it by SPACES.

[llaske]

Close due to lack of activity. @abhishek-sultaniya feel free to reopen it if need.