Rename Take Course block to Course Sign Up

[renatho]

Fixes #4285

Changes proposed in this Pull Request

• Rename Take Course block to Course Sign Up.

I was planning to also change the block name 'sensei-lms/button-take-course', but it seems it's not possible without breaking backward compatibility.

Testing instructions

• Go to the master branch.
• Create a course with the Take Course button.
• Go to this branch.
• Select the block, and make sure the name is "Course Sign Up" now.
• Also make sure it continues working properly for courses with associated products.

[donnapep]

I was reading about the difference between "Sign Up" and "Signup". "Sign Up" is a verb while "Signup" is a noun. I think here we want to use the noun version (i.e. Signup), since we're referring to a thing (i.e. course signup).

If we were wanting to use it as a verb, then it would be something like "Sign Up for Course", since nouns typically follow verbs.

All that to say that I think "Course Sign Up" should be "Course Signup". Yes, I went way deep on this. 😄

[renatho]

I was reading about the difference between "Sign Up" and "Signup". "Sign Up" is a verb while "Signup" is a noun. I think here we want to use the noun version (i.e. Signup), since we're referring to a thing (i.e. course signup).

If we were wanting to use it as a verb, then it would be something like "Sign Up for Course", since nouns typically follow verbs.

All that to say that I think "Course Sign Up" should be "Course Signup". Yes, I went way deep on this. 😄

Makes sense! Updated here: 3cbc23c