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, 19 insertions, 0 deletions

diff --git a/doc/Sharing-button.md b/doc/Sharing-button.md
new file mode 100644
index 00000000..fe576a77
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+++ b/doc/Sharing-button.md
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+#Sharing button
+### Add the sharing button (_bookmarklet_) to your browser
+
+ * Open your Shaarli and `Login`
+ * Click the `Tools` button in the top bar
+ * Drag the **`✚Shaare link` button**, and drop it to your browser's bookmarks bar.
+
+_This bookmarklet button is compatible with Firefox, Opera, Chrome and Safari. Under Opera, you can't drag'n drop the button: You have to right-click on it and add a bookmark to your personal toolbar._
+
+![(images/bookmarklet.png)]((images/bookmarklet.png).html)
+
+### Share links using the _bookmarklet_
+
+ * When you are visiting a webpage you would like to share with Shaarli, click the _bookmarklet_ you just added.
+ * A window opens.
+  * You can freely edit title, description, tags... to find it later using the text search or tag filtering.
+  * You will be able to edit this link later using the ![(https://raw.githubusercontent.com/shaarli/Shaarli/master/images/edit_icon.png) edit button.]((https://raw.githubusercontent.com/shaarli/Shaarli/master/images/edit_icon.png)-edit-button..html)
+  * You can also check the “Private” box so that the link is saved but only visible to you. 
+ * Click `Save`.**Voilà! Your link is now shared.**