Filter redability/check for cpplint.py
Fixed coding style in src/client/main.cpp
Fixed coding style in src/client/sprite.cpp
Fixed coding style in src/client/sprite.h
Fixed coding style in src/client/texture_atlas.cpp
Fixed coding style in src/client/texture_atlas.h
Fixed coding style in src/base/settings_manager.*
Fixed include guard format
Fixed coding style in src/server/main.cpp
Fixed coding style in src/server/*