Changing Primary language does not change methods select list #22

Describe the bug

The key to the methods select list is having the primary language and data set/structure chosen. As soon as the datatype is chosen the methods list should change. But if you change the primary language but leave the data type as it was, then the methods select list does not update unless you change the data type again.

To Reproduce
Steps to reproduce the behavior:

1. Have a primary language chosen, as well as a data type
2. Change the primary language
3. Submitting the form will not display any code blocks
4. The methods list does not update

Expected behavior

The methods select should change if data type is already selected

Screenshots
If applicable, add screenshots to help explain your problem.

Additional context

Add the functionality to check for data-type in localStorage, and if valid call the functionality for the methods select list in the primary language function