RELEASE: 3.19.12.20

Improving process, layout, productivity, collaboration, performance and compatibility.

Process:
* Easier installation (thanks to Docker).

Layout:
* Introducing static graphs;
* Responsive KWICs.

Productivity and collaboration:
* Saving sorting preference from one session to another;
* Preventing simultaneous modifications of a memo;
* Notifying current modifications.

Performance:
* Incremental list of memos composing the diary;
* Incremental list of modification in the history of the diary and in the user page.

Compatibility:
* Better interaction with LaSuli.

app/shows/index.js

@@ -7,7 +7,7 @@ function(o, req) {
     return {
       body: JSON.stringify({
         service: 'Cassandre',
-        revision: '3.19.06.23',
+        revision: '3.19.12.20',
         update_seq: req.info.update_seq
       })
     }