merge: Add PatternFly 4 web interface (#161)

This pull requests adds the new web interface based on the PatternFly 4 design framework.
This framework enables us to develop more quickly the interfaces necessary in OpenDC. 

* Remove the OpenDC landing page from the web interface module
* Add support for the PatternFly 4 framework in Next.js
* Relax topology schema requirements
* Migrate UI components to PatternFly 4

1 files changed, 44 insertions, 0 deletions

diff --git a/opendc-web/opendc-web-ui/src/components/AppHeader.js b/opendc-web/opendc-web-ui/src/components/AppHeader.js
new file mode 100644
index 00000000..b33212c4
--- /dev/null
+++ b/opendc-web/opendc-web-ui/src/components/AppHeader.js
@@ -0,0 +1,44 @@
+/*
+ * Copyright (c) 2021 AtLarge Research
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+import { PageHeader } from '@patternfly/react-core'
+import React from 'react'
+import Image from 'next/image'
+import AppHeaderTools from './AppHeaderTools'
+import { AppNavigation } from './AppNavigation'
+import AppLogo from './AppLogo'
+
+export function AppHeader() {
+    const logo = <Image src="/img/logo.png" layout="fixed" width={30} height={30} alt="OpenDC" />
+
+    return (
+        <PageHeader
+            logo={logo}
+            logoProps={{ href: '/' }}
+            logoComponent={AppLogo}
+            headerTools={<AppHeaderTools />}
+            topNav={<AppNavigation />}
+        />
+    )
+}
+
+AppHeader.propTypes = {}