Prepare folders structure for angular app

Gruntfile.js

client/app/images/favicon.png

client/app/images/loading.gif

client/app/javascripts/index.js

client/app/stylesheets/application.scss

client/app/stylesheets/base.scss

client/app/stylesheets/bootstrap-variables.scss

client/app/stylesheets/index.scss

server.js

server/controllers/api/v1/index.js

server/controllers/api/v1/pods.js

server/controllers/api/v1/remoteVideos.js

server/controllers/api/v1/videos.js

server/controllers/index.js

server/controllers/views.js

server/helpers/customValidators.js

server/helpers/logger.js

server/helpers/peertubeCrypto.js

server/helpers/requests.js

server/helpers/utils.js