[Docs] Add markdown support

- Use recommonmark to enable use of markdown files in docs.
- Fix theme not specified
- Remove unused spelling module.
- Cleanup mocking modules in conf so building docs requires only Sphinx.
- Simplify tox section, including use of requirements-docs file. Added
  slimit dependency for sdist-ing deluge package.

1 files changed, 3 insertions, 1 deletions

diff --git a/setup.cfg b/setup.cfg
index 8d62dd2a6..4809e64b5 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -22,7 +22,9 @@ known_third_party =
 # Ignore Windows specific modules.
     bbfreeze, win32verstamp,
 # Ignore gtk modules, primarily for tox testing.
-    pygtk, gtk, gobject, gtk.gdk, pango, cairo, pangocairo
+    pygtk, gtk, gobject, gtk.gdk, pango, cairo, pangocairo,
+# Ignore sphinx dependencies.
+    recommonmark,
 known_first_party = msgfmt, deluge
 order_by_type = true
 not_skip = __init__.py