index.html, js/conf.js.sample, js/main.js: display a static warning message...

index.html, js/conf.js.sample, js/main.js: display a static warning message when 'config.alert' is defined

See #2348.

browser/index.html

@@ -277,6 +277,7 @@
                 </div>
             </div>
 
+            <div class="menu" id="alert" style="float: right;"></div>
             <div id="logo" style="float: right;" onclick="console.log({'type': 'popup', 'default':'welcome'})">Vidjil <span class='logo'>(beta)</span></div>
 
             <div class="menu" style="float: right" onmouseover="showSelector('helpSelector');"> help

browser/js/conf.js.sample

@@ -49,4 +49,10 @@ var config = {
     /* Used for the standalone segmenter page */
     "segmenter_address" : "//db.vidjil.org/vidjil/segmenter",
 
+
+    /****************
+     * Static alerts
+     */
+
+    // "alert": "Rescue server",
 }

browser/js/main.js

@@ -90,6 +90,11 @@ try {
     this.db.log_error(err)
 }
 
+if (typeof config.alert !== 'undefined') {
+    $("#top-container").addClass("alert")
+    $("#alert").append(config.alert)
+}
+
 console.log("=== main.js finished ===");
 
 var timeout;