Update Current Courses section on homepage

[dcwebmaven]

As a user, I want to be able to view upcoming courses.

Please add the following courses to the mix-it-up for our fall lineup: Intro to HTML and CSS, taught by Natassja Linzau and Mark Brown II (September 15); Intro to JavaScript, taught by Mark Brown II and Natassja Linzau (September 29); and Photoshop 2 (?), taught by Radhika Bhatt (October 13). More details can be pulled from Courses spreadsheet. All courses occur from 1:00-4:00 pm in the DOC library.