Doc: sync from Wiki, generate HTML

Closes #291
Fixes #227

Modifications
 - HTML content: match the new Wiki structure
 - Makefile
   - generate a custom HTML sidebar
   - include the sidebar on all pages
   - infer and prepend page titles
   - handle relative links
   - add title metadata, e.g. Shaarli - <Page Name>

Signed-off-by: VirtualTam <virtualtam@flibidi.net>

1 files changed, 25 insertions, 0 deletions

diff --git a/doc/Usage.md b/doc/Usage.md
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+#Usage
+### Main features
+Shaarli is intended:
+ * to share, comment and save interesting links and news
+ * to bookmark useful/frequent personal links (as private links) and share them between computers
+ * as a minimal blog/microblog/writing platform (no character limit)
+ * as a read-it-later list (for example items tagged `readlater`)
+ * to draft and save articles/ideas
+ * to keep code snippets
+ * to keep notes and documentation
+ * as a shared clipboard between machines
+ * as a todo list
+ * to store playlists (e.g. with the `music` or `video` tags)
+ * to keep extracts/comments from webpages that may disappear
+ * to keep track of ongoing discussions (for example items tagged `discussion`)
+ * [to feed RSS aggregators](http://shaarli.chassegnouf.net/?9Efeiw) (planets) with specific tags[](.html)
+ * to feed other social networks, blogs... using RSS feeds and external services (dlvr.it, ifttt.com ...)
+
+### Using Shaarli as a blog, notepad, pastebin...
+
+ * Go to your Shaarli setup and log in
+ * Click the `Add Link` button
+ * To share text only, do not enter any URL in the corresponding input field and click `Add Link`
+ * Pick a title and enter your article, or note, in the description field; add a few tags; optionally check `Private` then click `Save`
+ * Voilà!  Your article is now published (privately if you selected that option) and accessible using its permalink.