footer: add link to opencollective donation

templates/index.html

@@ -198,6 +198,7 @@ to be customised.</li>
 
 		<ul>
 		<li><a href="../join/index.en.html">Become a member</a>
+		<li><a href="https://opencollective.com/ilot">Donate</a></li>
 		<li><a href="https://forge.ilot.io/ilot/-/projects">Git Forge</a></li>
 		<li><a href="https://wiki.ilot.io">Wiki</a></li>
 		</ul>

templates/note.fr/index.html

@@ -148,6 +148,7 @@ msgstr ""
 
 		<ul>
 		<li><a href="../../join/index.en.html">Become a member</a>
+		<li><a href="https://opencollective.com/ilot">Donate</a></li>
 		<li><a href="https://forge.ilot.io/ilot/-/projects">Git Forge</a></li>
 		<li><a href="https://wiki.ilot.io">Wiki</a></li>
 		</ul>

templates/note/index.html

@@ -102,6 +102,7 @@ parameter:</p>
 
 		<ul>
 		<li><a href="../../join/index.en.html">Become a member</a>
+		<li><a href="https://opencollective.com/ilot">Donate</a></li>
 		<li><a href="https://forge.ilot.io/ilot/-/projects">Git Forge</a></li>
 		<li><a href="https://wiki.ilot.io">Wiki</a></li>
 		</ul>

templates/popup.fr/index.html

@@ -159,6 +159,7 @@ msgstr ""
 
 		<ul>
 		<li><a href="../../join/index.en.html">Become a member</a>
+		<li><a href="https://opencollective.com/ilot">Donate</a></li>
 		<li><a href="https://forge.ilot.io/ilot/-/projects">Git Forge</a></li>
 		<li><a href="https://wiki.ilot.io">Wiki</a></li>
 		</ul>

templates/popup/index.html

@@ -108,6 +108,7 @@ inline in the page, inside square brackets.</p>
 
 		<ul>
 		<li><a href="../../join/index.en.html">Become a member</a>
+		<li><a href="https://opencollective.com/ilot">Donate</a></li>
 		<li><a href="https://forge.ilot.io/ilot/-/projects">Git Forge</a></li>
 		<li><a href="https://wiki.ilot.io">Wiki</a></li>
 		</ul>