Front-end implementation of maximum weekly reading #84

The code on the back-end is written. The scraping has been modified to pick out the maximum number of weekly pages for readings in the assignment text and set it as the readingAmount variable in the course object. (If one can't be identified, the number is set to 0.)

I was thinking front-end implementation could be a checkbox that gets clicked and a text box for user to put the number they want. [] Hide courses with more than [____] pages of weekly reading.