Use multipart/form-data for forms

src/main/controllers/web/about.tmpl.html

@@ -1,7 +1,7 @@
 <header>
   <h2>{ %community.name }</h2>
 </header>
-<form action="/login" method="post">
+<form action="/login" method="post" enctype="multipart/form-data">
   <h3>Login</h3>
   <label>
     <div>Username</div>

src/main/controllers/web/cluster/community-create.tmpl.html

@@ -1,4 +1,4 @@
-<form action="/cluster/communities/create" method="post">
+<form action="/cluster/communities/create" method="post" enctype="multipart/form-data">
   <h2>Create Local Community</h2>
   <label>
     <div>Origin</div>

src/main/controllers/web/signup.tmpl.html

@@ -1,7 +1,7 @@
 <header>
   <h2>{ %community.name }</h2>
 </header>
-<form action="/signup" method="post">
+<form action="/signup" method="post" enctype="multipart/form-data">
   <h3>Sign Up</h3>
   {#if .error_msg |$msg| =}
   <div class="error">Error: {$msg}</div>