Fixed issue 4, with fine control over the tabs access.

For each tab, at the exception of the project home and the
administration area, it possible to control the access rights if the
user is anonymous, signed in, member or owner.

src/IDF/templates/admin/tabs.html

@@ -0,0 +1,45 @@
+{extends "admin/base.html"}
+{block docclass}yui-t1{assign $inTabs = true}{/block}
+{block body}
+{if $form.errors}
+<div class="px-message-error">
+<p>{trans 'The form contains some errors. Please correct them to update the access rights.'}</p>
+{if $form.get_top_errors}
+{$form.render_top_errors|unsafe}
+{/if}
+</div>
+{/if}
+<form method="post" action=".">
+<table class="form" summary="">
+<tr>
+<th><strong>{$form.f.downloads_access_rights.labelTag}:</strong></th>
+<td>{if $form.f.downloads_access_rights.errors}{$form.f.downloads_access_rights.fieldErrors}{/if}
+{$form.f.downloads_access_rights|unsafe}
+</td>
+</tr>
+<tr>
+<th><strong>{$form.f.issues_access_rights.labelTag}:</strong></th>
+<td>{if $form.f.issues_access_rights.errors}{$form.f.issues_access_rights.fieldErrors}{/if}
+{$form.f.issues_access_rights|unsafe}
+</td>
+</tr>
+<tr>
+<th><strong>{$form.f.source_access_rights.labelTag}:</strong></th>
+<td>{if $form.f.source_access_rights.errors}{$form.f.source_access_rights.fieldErrors}{/if}
+{$form.f.source_access_rights|unsafe}
+</td>
+</tr>
+<tr>
+<td colspan="2">
+<input type="submit" value="{trans 'Save Changes'}" name="submit" /> 
+</td>
+</tr>
+</table>
+</form>
+{/block}
+{block context}
+<div class="issue-submit-info">
+<p><strong>{trans 'Instructions:'}</strong></p>
+<p>{blocktrans}You can configure here the project tabs access rights.{/blocktrans}</p>
+</div>
+{/block}