Use the 'pushed_at' time for current repo

instead of using the last 'committed_at' time. This is because we use
the 'pushed_time' of the fork to determine if the fork is newer than the
current repository.

This should address #13.j

app/data/contentscript.js

@@ -196,8 +196,7 @@ function makeRemoteDataURL(user, repo) {
 }
 
 function makeSelfDataURL(user, repo) {
-    return 'https://api.github.com/repos/' +
-                  user + '/' + repo + '/commits';
+    return 'https://api.github.com/repos/' + user + '/' + repo;
 }
 
 // From: http://crocodillon.com/blog/always-catch-localstorage-security-and-quota-exceeded-errors
@@ -242,28 +241,49 @@ function processWithData(user, repo, remoteDataStr, selfDataStr, isFreshData) {
         var remoteUpdateTimeMs = mbStrToMs(mostStarredFork['pushed_at']);
 
         /* Parse self data */
-        var allCommits = JSON.parse(selfDataStr);
+        /* This could either be the repo data (v1) or `all_commits` data (v2). */
+        var selfData = JSON.parse(selfDataStr);
+        var selfDataToSave = null;
+
+        var selfUpdateTimeMs = null;
+        if (selfData.hasOwnProperty('pushed_at')) {
+            /* This is not an array, but the repository data. */
+            selfUpdateTimeMs = mbStrToMs(selfData['pushed_at']);
+            selfDataToSave = selfData;
+        } else {
+            /* This is the old all-commits data. */
+            var allCommits = selfData;
+            if (!allCommits || allCommits.length < 1) {
+                if (DEBUG) {
+                    console.log(_logName,
+                                'Repository does not have any commits.');
+                }
+                return;
+            }
 
-        if (!allCommits || allCommits.length < 1) {
-            if (DEBUG) {
-                console.log(_logName,
-                            'Repository does not have any commits.');
+            var latestCommit = allCommits[0]['commit'];
+            var committer = latestCommit['committer'];
+
+            if (!committer) {
+                if (DEBUG) {
+                    console.error(_logName,
+                                  'Could not find the latest committer.');
+                }
+                return;
             }
-            return;
-        }
 
-        var latestCommit = allCommits[0]['commit'];
-        var committer = latestCommit['committer'];
+            selfUpdateTimeMs = mbStrToMs(committer['date']);
+            selfDataToSave = [allCommits[0]];
+        }
 
-        if (!committer) {
+        if (!selfUpdateTimeMs) {
             if (DEBUG) {
                 console.error(_logName,
-                              'Could not find the latest committer.');
+                              'Could not find the selfUpdateTimeMs.');
             }
             return;
         }
 
-        var selfUpdateTimeMs   = mbStrToMs(committer['date']);
 
         /* Cache data, if necessary */
         if (isFreshData) {
@@ -283,7 +303,7 @@ function processWithData(user, repo, remoteDataStr, selfDataStr, isFreshData) {
                                      relevantRemoteDataStr);
 
                 // Only the latest commit is relevant
-                var relevantSelfDataStr = JSON.stringify([allCommits[0]]);
+                var relevantSelfDataStr = JSON.stringify(selfDataToSave);
                 localStorage.setItem(makeSelfDataKey(user, repo),
                                      relevantSelfDataStr);
             } catch(e) {