error code
add error handler annotation
server: add error handler
Merge branch 'master' into server

Conflicts:
	src/main/java/com/mee/common/Server.java
move Server class to server package
server: add RequestContext class
server: use RequestContext
Merge branch 'master' into server
Merge branch 'master' into server
RequestContext: add method()

query context request method
Server: support POST request
App: split /settings/watch to GET and POST request
server: add Response class
server: can return a Response object
client: use requests module

implement proper post request
server: log activity