Working user and link list, (big)restructure

This is now a workspace consisting of:
  * the pslink app (a wasm frontend for the admin interface)
  * the pslink binary
  * shared - modules for communication between the two above.

pslink/templates/signup.html

@@ -0,0 +1,26 @@
+{% extends "admin.html" %}
+
+{% block admin %}
+<div class="center">
+    <form action="" method="POST">
+        <div>
+            <label for="username">{{ fluent(key="username", lang=user.language)
+                }}:</label>
+            <input type="text" name="username">
+        </div>
+        <div>
+            <label for="email">{{ fluent(key="email", lang=user.language)
+                }}:</label>
+            <input type="email" name="email">
+        </div>
+        <div>
+            <label for="password">{{ fluent(key="password", lang=user.language)
+                }}:</label>
+            <input type="password" name="password">
+        </div>
+        <input type="submit" value='{{ fluent(key="invite-user", lang=user.language)
+    }}'>
+    </form>
+    <h2>&nbsp;</h2>
+</div>
+{% endblock %}