Show version of Synapse-Admin

Change-Id: I354e3f3b3e4f45e5ca72318ce70b66bee433f3d6

package.json

@@ -1,6 +1,6 @@
 {
   "name": "synapse-admin",
-  "version": "0.1.0",
+  "version": "0.2.1",
   "description": "Admin GUI for the Matrix.org server Synapse",
   "author": "Awesome Technologies Innovationslabor GmbH",
   "license": "Apache-2.0",
@@ -29,8 +29,8 @@
     "react-scripts": "^3.4.1"
   },
   "scripts": {
-    "start": "react-scripts start",
+    "start": "REACT_APP_VERSION=$(git describe --tags) react-scripts start",
-    "build": "react-scripts build",
+    "build": "REACT_APP_VERSION=$(git describe --tags) react-scripts build",
     "fix:other": "yarn prettier --write",
     "fix:code": "yarn test:lint --fix",
     "fix": "yarn fix:code && yarn fix:other",

public/index.html

@@ -38,5 +38,12 @@
       To begin the development, run `npm start` or `yarn start`.
       To create a production bundle, use `npm run build` or `yarn build`.
     -->
+    <footer
+      style="position: relative; z-index: 2; height: 2em; margin-top: -2em; line-height: 2em; background-color: #eee; border: 0.5px solid #ddd">
+      <a id="copyright" href="https://github.com/Awesome-Technologies/synapse-admin"
+        style="margin-left: 1em; color: #888; font-family: Roboto, Helvetica, Arial, sans-serif; font-weight: 100; font-size: 0.8em; text-decoration: none;">
+        Synapse-Admin <b>(%REACT_APP_VERSION%)</b> by Awesome Technologies Innovationslabor GmbH
+      </a>
+    </footer>
   </body>
 </html>

src/components/LoginPage.js

@@ -29,7 +29,7 @@ const useStyles = makeStyles(theme => ({
   main: {
     display: "flex",
     flexDirection: "column",
-    minHeight: "100vh",
+    minHeight: "calc(100vh - 1em)",
     alignItems: "center",
     justifyContent: "flex-start",
     background: "url(./images/floating-cogs.svg)",
@@ -40,6 +40,7 @@ const useStyles = makeStyles(theme => ({
   card: {
     minWidth: "30em",
     marginTop: "6em",
+    marginBottom: "6em",
   },
   avatar: {
     margin: "1em",