chore(version-info): modify versioning for < v1.0.2

Angular v1.0.1 and earlier did not have valid versions and had a different
docs url format, so you can not access their api docs from the version
drop-down.

Closes angular#11132

Author: t-jindai

docs/app/src/versions.js

@@ -21,11 +21,13 @@ angular.module('versions', [])
   };
 
   $scope.jumpToDocsVersion = function(version) {
-    var currentPagePath = $location.path().replace(/\/$/, '');
-
-    // TODO: We need to do some munging of the path for different versions of the API...
-
-
-    $window.location = version.docsUrl + currentPagePath;
+    var currentPagePath = $location.path().replace(/\/$/, ''),
+        url = '';
+    if (version.isOldDocsUrl) {
+      url = version.docsUrl;
+    }else{
+      url = version.docsUrl + currentPagePath;
+    }
+    $window.location = url;
   };
 }]);

lib/versions/version-info.js

@@ -110,10 +110,16 @@ var getPreviousVersions =  function() {
       })
       .filter()
       .map(function(version) {
+        // angular.js didn't follow semantic version until 1.20rc1
+        if ((version.major === 1 && version.minor === 0 && version.prerelease.length > 0) || (version.major === 1 && version.minor === 2 && version.prerelease[0] === 'rc1')) {
+          version.version = [version.major, version.minor, version.patch].join('.') + version.prerelease.join('');
+          version.raw = 'v' + version.version;
+        }
         version.docsUrl = 'http://code.angularjs.org/' + version.version + '/docs';
         // Versions before 1.0.2 had a different docs folder name
-        if (version.major < 1 || (version.major === 1 && version.minor === 0 && version.dot < 2)) {
+        if (version.major < 1 || (version.major === 1 && version.minor === 0 && version.patch < 2)) {
           version.docsUrl += '-' + version.version;
+          version.isOldDocsUrl = true;
         }
         return version;
       })