Refs #8460 - HTML ID without space. Add some doc to functions.

.gitignore

@@ -27,6 +27,7 @@ nbprojec
 .support
 .support_plantuml
 .support_sonar
+qfq.flowchart.dia.autosave
 test.json
 test.php
 *.autosave

extension/Source/core/report/Link.php

@@ -392,7 +392,12 @@ class Link {
     }
 
     /**
+     * Renders a BS-dropdown menu.
+     *
      * @param string $str
+     *      'z|t:menu|b|o:click me'  - the menu button to click on. A text 'menu', a BS button, a tooltip 'click me'.
+     *      '||p:detail&pId=1&s|t:Person 1'     - Page id=detail with pId=1 will be opened in the browser.
+     *      '||d:file.pdf|p:detail&pId=1&_sip=1||t:Person as PDF' - Page id=detail with pId=1 will downloaded as a PDF.
      *
      * @return string
      * @throws CodeException
@@ -404,13 +409,8 @@ class Link {
         $menuEntryStrArr = array();
         $menuEntryLinkArr = array();
         $tokenCollect = array();
-        static $count = 0;
 
-        $time = microtime(false);
-        if (defined('PHPUNIT_QFQ')) {
-            $time = '0.123 1234';
-        }
-        $htmlId = $time . ' ' . $count++;
+        $htmlId = uniqid('dd_');
 
         $paramArr = KeyValueStringParser::explodeEscape(PARAM_DELIMITER, $str);
 
@@ -457,6 +457,8 @@ class Link {
     }
 
     /**
+     * https://getbootstrap.com/docs/3.4/components/#dropdowns
+     *
      * Start
      * <span class="dropdown">
      *   <span class="glyphicon glyphicon-option-vertical dropdown-toggle" id="dropdownMenu11" data-toggle="dropdown" aria-haspopup="true" aria-expanded="true">