Created the registration page.

Added unittests for the registration page.
Made Registration page dynamic wrt shows if it is open or closed.
Removed slider from home page.
Added better unittest to other pages.
Made the comments on functions more concise.
Deleted DB_README.txt and added all the contents to README.md.
Created registration page.

Made unit tests for registration page.
Made registration page more dynamic wrt it can be set to open or closed.
Made better unittests for other functions.
Removed role from about page.
Made function comments/docsrings more concise.
Deleted DB_README.txt and added contents to README.md.