[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, 43 insertions, 0 deletions

diff --git a/diplomacy/web/src/gui/components/delete_button.jsx b/diplomacy/web/src/gui/components/delete_button.jsx
new file mode 100644
index 0000000..59141fd
--- /dev/null
+++ b/diplomacy/web/src/gui/components/delete_button.jsx
@@ -0,0 +1,43 @@
+import React from "react";
+import {Button} from "./button";
+import PropTypes from "prop-types";
+
+export class DeleteButton extends React.Component {
+    constructor(props) {
+        super(props);
+        this.state = {step: 0};
+        this.onClick = this.onClick.bind(this);
+    }
+
+    onClick() {
+        this.setState({step: this.state.step + 1}, () => {
+            if (this.state.step === 2)
+                this.props.onClick();
+        });
+    }
+
+    render() {
+        let title = '';
+        let color = '';
+        if (this.state.step === 0) {
+            title = this.props.title;
+            color = 'secondary';
+        } else if (this.state.step === 1) {
+            title = this.props.confirmTitle;
+            color = 'danger';
+        } else if (this.state.step === 2) {
+            title = this.props.waitingTitle;
+            color = 'danger';
+        }
+        return (
+            <Button title={title} color={color} onClick={this.onClick} small={true} large={true}/>
+        );
+    }
+}
+
+DeleteButton.propTypes = {
+    title: PropTypes.string.isRequired,
+    confirmTitle: PropTypes.string.isRequired,
+    waitingTitle: PropTypes.string.isRequired,
+    onClick: PropTypes.func.isRequired
+};