Use strict mode for javascript
Satisfy jshint in client.js
Satisfy jshint in command_dispatcher.js
Satisfy jshint in context.js
Satisfy jshint in controller.js
Satisfy jshint in executor.js
Satisfy jshint in proxy_server.js
Satisfy jshint in social_sharing.js
Satisfy jshint in translator.js
Merge pull request #7 from Coornail/fix/jshint

Fix/jshint