Add a popup menu in the main menu which allows to quickly jump between projects.

* refactor out the common menu code from several base*.html classes into main-menu.html
  and put the raw links into a unordered list (which makes it easier to create dynamic
  menus as we cannot insert block items into inline items in strict mode)
* query the list of available projects on every request and set them for every template
  in Middleware.php
* make the popup menu pretty

src/IDF/templates/idf/main-menu.html

@@ -0,0 +1,31 @@
+<a href="#title" accesskey="2"></a>
+<ul id="main-menu">
+{if !$user.isAnonymous()}
+{aurl 'url', 'idf_dashboard'}
+<li>{blocktrans}Welcome, <strong><a class="userw" href="{$url}">{$user}</a></strong>.{/blocktrans}
+<a href="{url 'IDF_Views::logout'}">{trans 'Sign Out'}</a></li>{else}<li>
+<a href="{url 'IDF_Views::login'}">{trans 'Sign in or create your account'}</a></li>
+{/if}<li id="project-list"><a href="{url 'IDF_Views::index'}">{trans 'Project List'} &#x25be;</a>
+{if $allProjects.count() != 0}
+<ul>{foreach $allProjects as $p}
+<li>{if $p.private}<img style="vertical-align: text-bottom;" src="{media '/idf/img/lock.png'}" alt="{trans 'Private project'}" /> {/if}
+<a href="{url 'IDF_Views_Project::home', array($p.shortname)}">{$p}</a></li>
+{/foreach}</ul>
+{/if}</li>{if $isAdmin}<li><a href="{url 'IDF_Views_Admin::projects'}">{trans 'Forge Management'}</a></li>{/if}<li>
+<a href="{url 'IDF_Views::faq'}" title="{trans 'Help and accessibility features'}">{trans 'Help'}</a></li>
+</ul>
+
+{if $allProjects.count() != 0}
+<script type="text/javascript" charset="utf-8">
+{literal}
+$(document).ready(function() {
+  $('#project-list').bind('mouseenter', function(ev) {
+    $(this).find('ul').show();
+  }).bind('mouseleave', function(ev) {
+    $(this).find('ul').hide();
+  });
+});
+{/literal}
+</script>
+{/if}
+