_gnode as full JSON object representation implemented
some cleanup
splitting up session in two backends, local save done
local backend save function done
local get function done, deserializer next
some modifications at backends
new specification for backends
extract location introduced
merged some local changes with extract location method
select done on new backends
Merge branch 'get_and_save' of github.com:G-Node/python-gnode-client into get_and_save
get_list for the remote backend done, meta class extended
list and glist implemented
browser local() and remote() added
bugfixing get and get_list for remote
some refactoring: split backends, meta class moved to models
save function implemented, not tested
delete implemented for a local backend
sync func started
save methods for remote draft done