Replace the input! macro with an Input builder (#646)

* Replace the input! macro with an Input builder

* Use a BTreeMap instead of an HashMap

Followinf @fdb-hiroshima's advice

* Rename Input::to_html to Input::html

To make clippy happy

* Wrap error messages in red paragraphs

templates/session/password_reset.rs.html

@@ -9,8 +9,18 @@
   <h1>@i18n!(ctx.1, "Reset your password")</h1>
 
   <form method="POST">
-    @input!(ctx.1, password (password), "New password", form, errors.clone(), "minlenght=\"8\"")
-    @input!(ctx.1, password_confirmation (password), "Confirmation", form, errors.clone(), "minlenght=\"8\"")
+  	@(Input::new("password", i18n!(ctx.1, "New password"))
+  		.default(&form.password)
+  		.error(&errors)
+  		.set_prop("minlenght", 8)
+  		.input_type("password")
+  		.html(ctx.1))
+  	@(Input::new("password_confirmation", i18n!(ctx.1, "Confirmation"))
+  		.default(&form.password_confirmation)
+  		.error(&errors)
+  		.set_prop("minlenght", 8)
+  		.input_type("password")
+  		.html(ctx.1))
     <input type="submit" value="@i18n!(ctx.1, "Update password")" />
   </form>
 })