layout: add a navbar

I want to differentiate blog's entries from more general notes. For
this, we create two menu entries, and add a navbar at the top.

The nav bar let us select between the two kind of articles: blogs or
notes. For now we have a single blog entry, and no notes.

The page to list entries is simplified: we use the same layout for all
lists (tags, notes, blogs).

The CSS is updated to support the new nav bar.

1 files changed, 0 insertions, 0 deletions

diff --git a/users/fcuny/blog/content/notes/google-doc-failure.org b/users/fcuny/blog/content/blog/google-doc-failure.org
index b4d449d..b4d449d 100644
--- a/users/fcuny/blog/content/notes/google-doc-failure.org
+++ b/users/fcuny/blog/content/blog/google-doc-failure.org