Interactive sicp: add navigation buttons to bottom of page

[samuelfangjw]

Description

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update
• Code quality improvements

How to test

Check that navigation buttons go to next page and previous page correctly.

Checklist

• I have tested this code
• I have updated the documentation

[coveralls]

Pull Request Test Coverage Report for Build 954302666

• 16 of 22 (72.73%) changed or added relevant lines in 3 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.03%) to 30.212%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
src/commons/navigationBar/subcomponents/SicpNavigationBar.tsx	7	10	70.0%
src/pages/sicp/Sicp.tsx	3	6	50.0%

Totals
Change from base Build 954167627:	0.03%
Covered Lines:	3230
Relevant Lines:	9871

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💛 - Coveralls

[martin-henz]

Good idea.

[martin-henz]

looks good