[web] Make button "Delete all" remove only orders from current se… (#49)

- Make button "Delete all" remove only orders from current selected power.
- Reorganize code
- [web] Remove bugged and useless function gameReloaded() from game page.
- This function caused error `engine.getPhaseType is not a function` for
  games with deadlines.
- Move function saveGameToDisk into its own file.
- [web] Add documentation to methods involved in orders management to help understand what happens.
- Move methods getServerOrders() from game GUI component to game engine object.
- Rename method onSetNoOrders to onSetEmptyOrdersSet.
- Rename property in PowerActionsForm: onNoOrders => onPass.
- [web] Update sending orders to send request clearOrders when local orders list is null.

- Renamed local file:
  - components/power_order => power_orders
  - forms/power_actions_form => power_order_creation_form

- Move power orders buttons bar to a separate file:
  - components/power_orders_actions_bar

- [web] Improve messages about local/server defined orders.

1 files changed, 13 insertions, 0 deletions

diff --git a/diplomacy/web/src/gui/components/help.jsx b/diplomacy/web/src/gui/components/help.jsx
new file mode 100644
index 0000000..1ec1a54
--- /dev/null
+++ b/diplomacy/web/src/gui/components/help.jsx
@@ -0,0 +1,13 @@
+import React from "react";
+
+export function Help() {
+    return (
+        <div>
+            <p>When building an order, press <strong>ESC</strong> to reset build.</p>
+            <p>Press letter associated to an order type to start building an order of this type.
+                <br/> Order type letter is indicated in order type name after order type radio button.
+            </p>
+            <p>In Phase History tab, use keyboard left and right arrows to navigate in past phases.</p>
+        </div>
+    );
+}