Improve robustness of GitHub repo URL parsing

For example this works now: https://github.com/MichaelAquilina/zsh-auto-notify/pull/67/files
Previously `67` was taken as the repo owner and `files` as the repo name.

Author: devnoname120

website/src/queries-init.js

@@ -166,7 +166,15 @@ function getQueryOrDefault(defaultVal) {
   if (!JQ_REPO_FIELD.val()) {
     JQ_REPO_FIELD.val(defaultVal);
   }
-  return JQ_REPO_FIELD.val();
+
+  const val = JQ_REPO_FIELD.val();
+
+  const isShorthand = /^[\w\.-]+\/[\w\.-]+$/;
+  if (isShorthand.test(val)) {
+    return val;
+  } else {
+    return new URL(val).pathname;
+  }
 }
 
 function hideFilterContainer() {

website/src/queries-logic.js

@@ -471,11 +471,11 @@ function initiate_search() {
   clear_old_data();
 
   let queryString = getQueryOrDefault("payne911/PieMenu");
-  let queryValues = queryString.split('/').filter(Boolean);
+  let queryValues = queryString.split('/').filter(s => s.length > 0);
 
   let len = queryValues.length;
   if (len < 2) {
-    setMsg('Please enter a valid query: it should contain two strings separated by a "/"');
+    setMsg('Please enter a valid query: it should contain two strings separated by a "/", or the full URL to a GitHub repo');
     ga_faultyQuery(queryString);
     return; // abort
   }
@@ -486,8 +486,8 @@ function initiate_search() {
   hideFilterContainer();
   setMsg(UF_MSG_SCANNING);
 
-  const user = queryValues[len - 2];
-  const repo = queryValues[len - 1];
+  const user = queryValues[0];
+  const repo = queryValues[1];
   if (history.replaceState) {
     history.replaceState({}, document.title, `?repo=${user}/${repo}`); // replace current URL param
   }