Allow users to discard their own topics

app/public/static/topic_discard.js

@@ -0,0 +1,29 @@
+$(".topic-discard").click(function() {
+	var ele = $(this);
+	var tid = ele.attr("data-tid");
+	var discard = !ele.parent().parent().hasClass("discardtopic");
+	fetch(new Request("/api/topic_discard/?tid=" + tid +
+			"&discard=" + (discard ? "true" : "false"), {
+		method: "post",
+		credentials: "same-origin",
+		headers: {
+			"Accept": "application/json",
+			"X-CSRFToken": csrf_token,
+		},
+	})).then(function(response) {
+		response.text().then(function(txt) {
+			console.log(JSON.parse(txt));
+			if (JSON.parse(txt).discarded) {
+				ele.parent().parent().addClass("discardtopic");
+				ele.removeClass("btn-danger");
+				ele.addClass("btn-success");
+				ele.text("Show");
+			} else {
+				ele.parent().parent().removeClass("discardtopic");
+				ele.removeClass("btn-success");
+				ele.addClass("btn-danger");
+				ele.text("Discard");
+			}
+		}).catch(console.log)
+	}).catch(console.log)
+});