lang/org: major refactor & add org-fancy-priorities package

- Fixes an issue where evil bindings weren't working in org-mode
- Significantly slims down on unnecessary keybinds
- Remove +org-init-keybinds-for-evil-h hook and reli more on our new
  evil-org fork, which has upstreamed some of our changes.
- Documents undocumented functions, remove unnused ones, and reorganize
  org's autoload libraries by convention.
- Adds org-fancy-priorities for more elegant (and subtle) priority
  display than ugly [#A] tags.

modules/lang/org/autoload/org-link.el

@@ -30,3 +30,20 @@
           (buffer-substring-no-properties (point) (point-max)))
       (message "Download of image \"%s\" failed" link)
       nil)))
+
+
+;;
+;;; Commands
+
+;;;###autoload
+(defun +org/remove-link ()
+  "Unlink the text at point."
+  (interactive)
+  (unless (org-in-regexp org-link-bracket-re 1)
+    (user-error "No link at point"))
+  (save-excursion
+    (let ((label (if (match-end 2)
+                     (match-string-no-properties 2)
+                   (org-link-unescape (match-string-no-properties 1)))))
+      (delete-region (match-beginning 0) (match-end 0))
+      (insert label))))