[Emacs] Bind helm-occur
[Emacs] Improve structure and format of config

Added some more documentation/commentary.

Use org-indent-mode: In this minor mode, all lines are prefixed for
display with the necessary amount of space. Also headlines are prefixed
with additional stars, so that the amount of indentation shifts by two
spaces per level.

This mode affects ths display only, eliminating the need to indent
section content, which was a hassle.
[Emacs] Update Enox theme
[Vim] Defer loading of insert mode plug-ins
[Vim] Upgrade vim-plug
[Vim] Defer loading more plug-ins
[Vim] Remove obsolete comment