Resolve "Improve week view for mobile devices (size s)"

Closes #186 (closed)

aleksis/apps/alsijil/static/js/alsijil/week_view.js

+$(document).ready(function () {
+    $("#id_group").change(function () {
+        $("#id_teacher").val("").formSelect();
+    });
+    $("#id_teacher").change(function () {
+        $("#id_group").val("").formSelect();
+    });
+    $("#toggle-row.pre-hidden").hide();
+
+});
+$("#toggle-button").click(function () {
+    $("#toggle-row").toggle();
+})
+$(".unfold-trigger").click(function (event) {
+    let target = event.target;
+    target.classList.toggle("vertical");
+    let next_container = $(target).parent().next(".horizontal-scroll-container");
+    if (next_container.length >= 1) {
+        next_container[0].classList.toggle("vertical");
+    }
+})
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