New combient Logo & background color

frontend/app/app.less

+@primaryColor: #333;

index.js

@@ -3,6 +3,8 @@
 const AwesomeModule = require('awesome-module');
 const Dependency = AwesomeModule.AwesomeModuleDependency;
 const glob = require('glob-all');
+const path = require('path');
+
 const FRONTEND_JS_PATH = __dirname + '/frontend/app/';
 const AWESOME_MODULE_NAME = 'linagora.esn.custom-combient';
 
@@ -39,6 +41,8 @@ const awesomeModule = new AwesomeModule(AWESOME_MODULE_NAME, {
 
       const webserverWrapper = dependencies('webserver-wrapper');
 
+      const lessFile = path.join(FRONTEND_JS_PATH, 'app.less');
+
       // Register every exposed frontend scripts
       const frontendJsFilesFullPath = glob.sync([
         FRONTEND_JS_PATH + '**/*.module.js',
@@ -52,6 +56,8 @@ const awesomeModule = new AwesomeModule(AWESOME_MODULE_NAME, {
         localJsFiles: frontendJsFilesFullPath
       });
 
+      webserverWrapper.injectLess(AWESOME_MODULE_NAME, [lessFile], 'esn');
+
       webserverWrapper.addApp(AWESOME_MODULE_NAME, app);
 
       return callback();