The motivation for this change was to rethink lang/org's flags. Many of
its former flags represented non-features. Therefore, its flags have
been reduced to five: +dragndrop, +ipython, +pandoc, +gnuplot and
+present. Everything else is included as org-load-hooks and treated as
reasonable defaults.
Other changes:
- Fixes#1502: don't autopair certain pairs when in a math region
- Fixes#1483: broken localleader in org-agenda
- Adds gnuplot support #1108
- Doom's org submodules have been moved into lang/org/contrib/, because
I expect there will be *many* more to come, and I don't want to
pollute the moudle's root.
