Changed the GUI to look cool
GUI editing

Edited the Database check screen and the book search results screen to
look fancy
Edited the color of the text so its easier to see
Edited the color of the text so its easier to see, but it actually is easier to see this time
Made changes TA suggested: switched return book to employee side, only need isbn to check out and return a book.
Merge pull request #31 from kmj098/GUIedits

Gu iedits