Update to agenda-custom.el and general-org.el

Removed code from agenda-custom.el that was suppose to exclude SCHEDULED
items from the agenda. Unfortunately, it excluded everything that didn't
have a DEADLINE. This has the side effect of removing all times from the
daily agenda view as well. Thus, SCHEDULED items have been removed from
my workflow--not every tool is for every person. For my, their purpose
was ill defined at best.

Set org-deadline-warning-days to 0 because I didn't like future tasks
cluttering up my day view. The agenda items now feel much more
manageable.

Set org-agenda-timegrid-use-ampm to true which displays the agenda times
in AM/PM. This has no effect on the actual in-org-mode file times.

Enabled syntax highlighting for org-babel snippets in general-org.el
which should work when I export the blocks to HTML.

Also set org-export-with-drawers to true because I sometimes include
relevant notes in the :LOGBOOK: of each task.