Use numbers when comparing versions

js/h5p-content-upgrade-process.js

@@ -100,6 +100,7 @@ H5P.ContentUpgradeProcess = (function (Version) {
       else {
         // Go through the minor versions for this major version
         asyncSerial(minors, function (minor, upgrade, nextMinor) {
+          minor =+ minor;
           if (minor <= oldVersion.minor || minor > newVersion.minor) {
             // Older than or equal to the current version or newer than the selected
             nextMinor();

js/h5p-version.js

@@ -10,8 +10,8 @@ H5P.Version = (function () {
     var versionSplit = version.split('.', 3);
 
     // Public
-    this.major = versionSplit[0];
-    this.minor = versionSplit[1];
+    this.major =+ versionSplit[0];
+    this.minor =+ versionSplit[1];
 
     /**
      * Public. Custom string for this object.