First draft of schedule section

- added the hooks for the PHP function to display the correct sections,
depending on time of year

- created divs and content for each section

- styled sections, including a subtle background texture

- still probably need revision, especially considering the emptiness of
the other two sections; perhaps those can be collapsed in a single
column, leaving two columns regardless of time of year.

- amended the condition in the adoration_schedule() function to include
a dummy variable for easy on/off testing.