Don't submit form on hitting enter

mibpov.js

@@ -2452,6 +2452,16 @@ exportHeaderLink.onclick = function() {
 	toggleConfigSectionDisplay(this, exportContainer);
 }
 
+/* Prevent forms from submitting */
+function disableFormSubmission() {
+	let elements = document.querySelectorAll("form");
+	for (let elem of elements) {
+		elem.onsubmit = function() {
+			return false;
+		}
+	}
+}
+
 /* Load events */
 
 window.addEventListener("load", initBiomeColorSelectors);
@@ -2464,3 +2474,4 @@ window.addEventListener("load", updateWidgetStates);
 window.addEventListener("load", updateAltitudeText);
 window.addEventListener("load", unhideContent);
 window.addEventListener("load", fitCanvasInBody);
+window.addEventListener("load", disableFormSubmission);