Fixed issue 42, add projects list link in project page.

At the top, a link to the project list is added when within a project
page.

src/IDF/templates/base.html

@@ -36,6 +36,7 @@
 {if $project}<h1 class="project-title">{$project}</h1>{/if}
     <p class="top"><a href="#title" accesskey="2"></a>
 {if !$user.isAnonymous()}{aurl 'url', 'IDF_Views_User::myAccount'}{blocktrans}Welcome, <strong><a class="userw" href="{$url}">{$user}</a></strong>.{/blocktrans} <a href="{url 'IDF_Views::logout'}">{trans 'Sign Out'}</a>{else}<a href="{url 'IDF_Views::login'}">{trans 'Sign in or create your account'}</a>{/if}
+{if $project} | <a href="{url 'IDF_Views::index'}">{trans 'Project List'}</a>{/if}
 | <a href="{url 'IDF_Views::faq'}">{trans 'Help'}</a>
     </p>
 <div id="header">