Restructure webapp and infoscreen

webapp/static/css/main_nav.css

@@ -1,3 +0,0 @@
-/*.main_navigation .navbar-border .navbar-nav .nav-item {
-    display: block;
-}*/

webapp/static/webapp/css/footer.css

@@ -0,0 +1,35 @@
+#footer-div {
+    height:10vh;
+}
+
+footer {
+    position: absolute;
+    bottom: 1rem; /* Distance from bottom of page */
+    width: 100%;
+    height: 5rem; /* Set the fixed height of the footer here */
+}
+
+footer .container .col .nav .nav-item {
+    display: inline-block;
+    margin-right: 3vh;
+}
+
+.lang-button {
+    height: 4vh;
+    width: 6vh;
+    margin-left: 1vh;
+    margin-right: 1vh;
+}
+
+.lang-select {
+    width: 10rem;
+    display: inline-block;
+}
+
+footer .lang-form {
+    margin: 1rem auto 0;
+}
+
+.footer-padder {
+    margin-top: 6rem;  /* height of the footer element */
+}