Register default language en_US.

js/init.js

@@ -15,6 +15,7 @@ var webui = angular.module('webui', [
 
 webui.config(['$translateProvider', function ($translateProvider) {
   $translateProvider
+      .translations('en_US', translations.en_US)
       .translations('th_TH', translations.th_TH)
       .translations('zh_CN', translations.zh_CN)
       .determinePreferredLanguage();

js/translate/en_US.js

@@ -0,0 +1,85 @@
+if(typeof translations == 'undefined'){
+    translations = {};
+}
+
+translations.en_US = {  // replace en_US to ll_CC, examples: zh_CN, de_AT.
+// header
+    'Search': 'Search',
+    // Nav menu
+    'Add': 'Add',
+    'By URIs': 'By URIs',
+    'By Torrents': 'By Torrents',
+    'By Metalinks': 'By Metalinks',
+    'Manage': 'Manage',
+    'Pause All': 'Pause All',
+    'Resume Paused': 'Resume Paused',
+    'Purge Completed': 'Purge Completed',
+    'Settings': 'Settings',
+    'Connection Settings': 'Connection Settings',
+    'Global Settings': 'Global Settings',
+    'Server info': 'Server info',
+    'About and contribute': 'About and contribute',
+    'Language': 'Language',
+// body
+// nav side bar
+// global statistics
+    'Global Statistics': 'Global Statistics',
+// download filters
+    'Download Filters': 'Download Filters',
+    'Running': 'Running',
+    'Active': 'Active',
+    'Waiting': 'Waiting',
+    'Complete': 'Complete',
+    'Error': 'Error',
+    'Paused': 'Paused',
+    'Removed': 'Removed',
+    'Hide linked meta-data': 'Hide linked meta-data',
+    'Displaying': 'Displaying',
+    'of': 'of',
+    'downloads': 'downloads',
+    'Toggle': 'Toggle',
+    'Reset filters': 'Reset filters',
+// starred properties
+    'Quick Access Settings': 'Quick Access Settings',
+    'Save settings': 'Save settings',
+// modals
+    'Add Downloads By URIs': 'Add Downloads By URIs',
+    'Download settings': 'Download settings',
+    'Advanced settings': 'Advanced settings',
+    'Cancel': 'Cancel',
+    'Start': 'Start',
+// add torrent modal
+    'Add Downloads By Torrents': 'Add Downloads By Torrents',
+    'Select Torrents': 'Select Torrents',
+    'Select a Torrent:': 'Select a Torrent:',
+    //'Download settings': '',  // repeated
+    //'Advanced settings': '',
+    //'Cancel': '',
+    //'Start': '',
+// add metalink modal
+    'Add Downloads By Metalinks': 'Add Downloads By Metalinks',
+    'Select Metalinks': 'Select Metalinks',
+    'Select a Metalinks:': 'Select a Metalinks:',
+    //'Download settings': '',
+    //'Advanced settings': '',
+    //'Cancel': '',
+    //'Start': '',
+// select file modal
+    'Choose files to start download for': 'Choose files to start download for',
+    'Select to download': 'Select to download',
+// settings modal
+    //'Cancel': '',
+    //'Connection Settings': '',
+    'Aria2 RPC host and port': 'Aria2 RPC host and port',
+    'Enter the host:': 'Enter the host:',
+    'Enter the port:': 'Enter the port:',
+    'Direct Download': 'Direct Download',
+    //'Cancel': '',
+    'Save Connection configuration': 'Save Connection configuration',
+// server info modal
+    'Aria2 server info': 'Aria2 server info',
+    'Close': 'Close'
+// about modal
+    //'About and contribute': '',
+    //'Close': '',
+};