store and use preferred language from user (#55)

src/main/webapp/js/controllers.js

@@ -798,6 +798,15 @@ function($scope, $location, SettingsService, AnalyticsService) {
 	
 	AnalyticsService.track();
 	
+
+	$scope.languages = [ {
+		id : 'en',
+		label : 'English'
+	}, {
+		id : 'fr',
+		label : 'Français'
+	} ];
+	
 	$scope.settingsService = SettingsService;
 	$scope.$watch('settingsService.settings', function(value) {
 		$scope.settings = angular.copy(value);
@@ -811,7 +820,7 @@ function($scope, $location, SettingsService, AnalyticsService) {
 	$scope.save = function() {
 		SettingsService.settings = $scope.settings;
 		SettingsService.save(function() {
-			$location.path('/');
+			window.location.href = window.location.href.substring(0, window.location.href.lastIndexOf('#'));
 		});
 	};
 }]);

src/main/webapp/templates/settings.html

@@ -19,6 +19,14 @@
 				<div class="tab-content">
 					<div class="tab-pane active" id="general">
 						<div class="form-horizontal">
+							<div class="control-group">
+								<label class="control-label">Language</label>
+								<div class="controls">
+									<select name="language" ng-model="settings.language" class="input-block-level" 
+										ng-options="lang.id as lang.label for lang in languages" required>
+									</select>
+								</div>
+							</div>
 							<div class="control-group">
 								<label class="checkbox">
 									<input type="checkbox" name="showRead"