creates background gradient for traffic tab
adds view controller for the traffic tab
lays out basic view for the traffic tab
fixing hours: moves buttons off the scroll view page
fixes bug with scrolling using buttons
removes unneeded variable in selectCurrentDayOfWeek
renames selectCurrentDayOfWeek to selectCurrentDayOfTheWeek
changes coloring of sections and selected cells
changes height of the headers of each section
renames file hoursModel to HoursModel
adds error message when hours do not display for a selected cell
resizes elements on the hours view