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## Because
<!-- Summarize the purpose or reasons for this PR, e.g. what problem it
solves or what benefit it provides. -->
we are replacing Replit exercises with ones from `javascript-exercises`,
so we need to do set up for Node.js earlier in the JavaScripts Basics
course.

## This PR
<!-- A bullet point list of one or more items describing the specific
changes. -->
* Moves the Installing Node.js lesson so it is right before the Data
Types and Conditionals lesson
- The Data Types and Conditionals lesson is where we will have new
material from `javascript-exercises`

## Issue
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with the issue number, e.g. Closes #2013.

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can link it as above without the 'Closes' keyword, e.g. 'Related to
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Related to TheOdinProject/curriculum#29054

## Additional Information
<!-- Any other information about this PR, such as a link to a Discord
discussion. -->
Since multiple repos are affected simultaneously, it may be ideal to
merge all 3 PRs at once:

**Blockers:**
* Need to add the four new exercises to the `javascript-exercises` repo
- TheOdinProject/javascript-exercises#509
* Need to update the appropriate lessons within our `curriculum` repo to
replace the Replit lessons currently there -
TheOdinProject/curriculum#29161

I will link the relevant PRs here in a moment after I create them.

## Pull Request Requirements
<!-- Replace the whitespace between the square brackets with an 'x',
e.g. [x]. After you create the PR, they will become checkboxes that you
can click on. -->
- [x] I have thoroughly read and understand [The Odin Project
Contributing
Guide](https://github.com/TheOdinProject/theodinproject/blob/main/CONTRIBUTING.md)
- [x] The title of this PR follows the `keyword: brief description of
change` format, using one of the following keywords:
    - `Feature` - adds new or amends existing user-facing behavior
- `Chore` - changes that have no user-facing value, refactors,
dependency bumps, etc
    - `Fix` - bug fixes
-   [x] The `Because` section summarizes the reason for this PR
- [x] The `This PR` section has a bullet point list describing the
changes in this PR
- [ ] I have verified all tests and linters pass after making these
changes.
- [x] If this PR addresses an open issue, it is linked in the `Issue`
section
-   [ ] If applicable, this PR includes new or updated automated tests

* Add empty files to create outline

* Add broken troubleshooting function

* Import troubleshooting.js file

* Test function to ensure numbers are added together

* Describe exercise two

* Test result for troubleshooting function

* Add solution

* Add empty files to create outline

* Add broken numberChecker function

* Export numberChecker function

* Verify proper return value for numbers greater than or equal to ten

* Verify proper return value for numbers less than ten

* Add solution

* Skip tests after the first one

* Describe exercise three

* Add empty files to create outline

* Add math variables for the exercise

* Verify that math-related variables are returning correct answers

* Add solution

* Add tests for solution

* Describe exercise

* Add comment to describe answer already given

* Add empty files to create outline

* Add example problem

* Verify that example problem contains correct variables

* Add boilerplate code required to begin exercise

* Add progressive tests for exercise

* Describe exercise

* Adjust excessive indentation

* Add hint using comment

* Update with correct exercise heading

* Update with correct exercise number

* rename troubleshooting to addNumbers

* Rename script to numberChecker

* Rename math to mathEquations

* Give undefined assignment to undeclared variables instead of null

* Add solution

* Add tests for the solution

* rename follow to joinStrings

* Improve hint

* Add additional hint

* Update exercise title to mathEquations

* Move explanation for enabling tests to numberChecker exercise

* Renumber repeatString

* Renumber reverseString

* Renumber removeFromArray

* Renumber sumAll

* Renumber leapYears

* Renumber tempConversion

* Renumber calculator

* Renumber palindromes

* Renumber fibonacci

* Renumber getTheTitles

* Renumber findTheOldest

* Remove unnecessary mention of file name

* Use bullet point for extended description of a step

* Remove redundant snippet of comment already in the code

* Use bullet points for extended descriptions of steps

* Use syntax highlighting for code snippet

* Clarify which file will be edited

* Remove period

* Add final instruction

* Update reference to exercise file names

* Remove unnecessary comment from solution

* Add comment as reminder to not edit some of the code

* Separate tests for steps two and three

* Remove unnecessary comment from solution

* Update wording

* Remove additional space after periods

Stale numbering - missed TheOdinProject#509

Stale numbering - missed #509

* Add empty files to create outline

* Add broken troubleshooting function

* Import troubleshooting.js file

* Test function to ensure numbers are added together

* Describe exercise two

* Test result for troubleshooting function

* Add solution

* Add empty files to create outline

* Add broken numberChecker function

* Export numberChecker function

* Verify proper return value for numbers greater than or equal to ten

* Verify proper return value for numbers less than ten

* Add solution

* Skip tests after the first one

* Describe exercise three

* Add empty files to create outline

* Add math variables for the exercise

* Verify that math-related variables are returning correct answers

* Add solution

* Add tests for solution

* Describe exercise

* Add comment to describe answer already given

* Add empty files to create outline

* Add example problem

* Verify that example problem contains correct variables

* Add boilerplate code required to begin exercise

* Add progressive tests for exercise

* Describe exercise

* Adjust excessive indentation

* Add hint using comment

* Update with correct exercise heading

* Update with correct exercise number

* rename troubleshooting to addNumbers

* Rename script to numberChecker

* Rename math to mathEquations

* Give undefined assignment to undeclared variables instead of null

* Add solution

* Add tests for the solution

* rename follow to joinStrings

* Improve hint

* Add additional hint

* Update exercise title to mathEquations

* Move explanation for enabling tests to numberChecker exercise

* Renumber repeatString

* Renumber reverseString

* Renumber removeFromArray

* Renumber sumAll

* Renumber leapYears

* Renumber tempConversion

* Renumber calculator

* Renumber palindromes

* Renumber fibonacci

* Renumber getTheTitles

* Renumber findTheOldest

* Remove unnecessary mention of file name

* Use bullet point for extended description of a step

* Remove redundant snippet of comment already in the code

* Use bullet points for extended descriptions of steps

* Use syntax highlighting for code snippet

* Clarify which file will be edited

* Remove period

* Add final instruction

* Update reference to exercise file names

* Remove unnecessary comment from solution

* Add comment as reminder to not edit some of the code

* Separate tests for steps two and three

* Remove unnecessary comment from solution

* Update wording

* Remove additional space after periods

Stale numbering - missed TheOdinProject#509

Stale numbering - missed TheOdinProject/javascript-exercises#509