web server to obtain the bitbake server information through helper restful interface to achieve.for example,when the web server starts up,first of all, the client will send a request to web server ask for layers and machines list,web server will transfer users request to bitbake server by restful interface,bitbake server handles the request and returns the result to web server,user can acquire information from web server.
in django web hob can obtain layers and machines information from bitbake server by restful interface already.once user added a layer,the machine list is also dynamic changes.each layer contains a different number of machine list.
Webhob feature has changed, the feature will be abandoned.
remove it.